: $1,195.00
Item Number: TPMS-18/5V
18 Sensor Tire Pressure Monitoring System

The TPMS-18 is one of the finest Tire Pressure Monitoring Systems available today. It automatically and continuously monitors the tires, alerting the driver when a condition reaches an abnormal pressure (high or low), or the temperature reaches an unsafe level.

The commercial grade wireless system utilizes external valve-stem mounted sensors. These rugged devices are revolutionary in design, allowing the sensor units to be mounted externally, making the installation easy and low cost. Additionally, the exclusive design technique enables the air in the tire to be refilled through the built-in valve stem without needing to remove the sensor. The valve-stem mounted sensor-transmitter is weatherproof and can monitor tire pressure of up to 144 PSI.

Drive safer and more economically. By supervising your vehicle`s tires, you will increase the life of each tire, reduce fuel consumption and provide unprecedented value in improved handling and ultimate safety.This 18-tire commercial grade TPMS (Tire Pressure Monitoring System) is geared toward Trucks, Trailers, Buses, Off-Road, Construction, Utility Vehicles and Motor-Coaches. Allowing Fleet, RV and commercial vehicle owners the ability to maximize fuel economy while improving tire wear in an easy to install and utilize system. 

The TPMS enhances the overall safety of the vehicle by detecting under-inflated, over-inflated, over-heated and rapid leaking tires. The system provides a unique package of features which allows its users to increase fuel economy while maximizing tire casing and new tire wear. All elements focus on making the system the easiest to install, the most effective for driver usage as well as fleet maintenance. The light weight sensors are mounted on the valve stem and allow air to flow directly through the sensor to the tire without removal, minimizing time and costs without losing sensors. The system is programmed to detect low pressure, high pressure, high temperature and rapid leaks using an exclusive rechargeable, Handheld Monitor which also functions as a portable tire gauge. All systems include an easily mounted Universal Transceiver which assures continuous transmission of the wireless signals without the inconvenience of installing multiple antennae. 

Features include an optional anti-theft locking mechanism for the sensors which are housed in a rugged nylon encasement with a five (5) to seven (7) year battery life. Sensors are designed for harsh environments and operate in all weather conditions within a pressure range of 15 PSI to 150 PSI. In addition to offering status review of real-time tire status, the monitors display icons which graphically indicate type & location of tire alarms visually and audibly.

Warning levels are indicated based on conditions which affect the tire pressure or temperature - it is very important that a TPMS system is able to accurately detect and indicate these conditions in order to provide the user with alert conditions which may create a potential tire failure. System allows the user to simply program their warning alert levels by axle position to provide the best management of their fuel and tire costs.

- Ideal for Commercial Truck Fleets, 18-Wheel Trailer Rigs & Utility Vehicles
- Externally Mounted Valve-stem Sensor-Transmitters
- Easy installation - Does Not Require Tire Removal or Remounting
- Monitors High Pressure, Low Pressure and High Temperature
- Monitors up to Eighteen (18) Tires on Truck & Trailer Simultaneously
- Tire Pressure Measuring Range: 15 PSI - 144 PSI
- Programmable Sensor Threshold Alert Range: 18 PSI - 135 PSI
- Sensor Transmission Distance: 50 Feet (15 Meters)
- Outstanding Battery Life: 7 to 10 years
- Audible and LCD Display Warning Indicators
- Advanced Anti-interference Technology
- Prevents Cross-talk from Adjacent Vehicles
- Operates Automatically
- Continuously Monitors Tires Whenever the Vehicle Power is On
- One (1) Year Warranty

INNOVATION IN SAFETY - The System utilizes an innovative externally mounted valve-stem sensor, allowing for easy, low cost installation and use. The Portable Handheld Monitor provides audible and visual alerts when a tire condition is indicated – all tire conditions are specific to individual tire positions. The system alerts with an indicated icon for the following conditions: Low Tire Pressure, High Tire Pressure, Tire Pressure Watch (Rapid Leak), High Temperature.

The exclusive design allows the user to program warning levels and enables the air in the tire to be refilled directly through the built in valve stem without removing the sensor, providing less distraction for the driver.

TIRE WEAR - Running inappropriate tire pressures can cause rapid or poor tire wear – statistics show that a 20% under-inflated tire can reduce new tread life by approximately 25% and that 90% of tire failures are caused by under-inflation. Additionally, tires that are under-inflated by 20% lose approximately 30% of the life of the casing and may prevent the feet from achieving multiple retreads.

The Portable Handheld Monitor makes maintaining proper tire inflation even easier as you can monitor the tire pressure as you fill the tire!

FUEL ECONOMY - Under-inflation by 20 percent causes an estimated fuel mileage drop of 2% - this can add up to thousands of dollars in additional fuel if the proper tire pressure is not maintained. Program the level that the system will alarm for low or high pressure so the pressure can be maintained to assure safety and increased fuel economy.

SIMPLE INSTALLATION - Sensors are preprogrammed for tire position and mounted directly on the valve stem. The user easily programs system for pressure threshold levels and temperature alert levels. The sensor can be secured using 3M Loctite® thread locking compound which is provided, or an optional locking mechanism – this not only reduces theft, but also assures an air-tight seal to prevent leakage.

The Portable Handheld Monitor has an easily readable LCD display and can be conveniently mounted on the dashboard and re-charged using the cigarette lighter adapter, provided with the system. The Universal Transceiver (included with the system) is a waterproof enclosed receiver and transmitter that boasts the signal from the tires without the need to install external antennas. 

EASE OF USE & MAINTENANCE - A tire management system is only effective if the driver is able to easily use it. There is no sensor removal required to add or delete air which passes directly through the valve stem mounted sensor. This minimizes the chance to lose sensors and eliminates the loss of air which is evident with other sensor systems. Additionally, the programmable sensors have a five (5) to seven (7) year battery life and are contained in a rugged, solid compound filled nylon encasement.

AFFORDABILITY - Safety should not be prohibited by cost. This Tire Pressure Monitoring System is priced to allow rapid return on initial investment while improving the vehicle safety environment and comes with a One Year Limited Warranty.
Things to Consider When Selecting a Tire Pressure Monitoring System (TPMS)

1. What are the advantages of TPMS?

Assuming that the TPMS system has all the necessary capabilities such as temperature monitoring, over and under inflation alarming and slow leak detection, then the following advantages can be realized:

a) Properly inflated tires predictably increase overall fuel economy.
b) Overall tire life can be substantially extended by monitoring tire pressure in real-time. By example, a 20% under-inflated tire reduces tread life by approximately 25%.
c) Significantly extends the life of the casing so that a tire can be safely retreaded up to (5) five times to a useful life of over 1 million miles. Tires that are under-inflated by 20% lose approximately 30% of the life of the casing.
d) Increases the overall safety of the vehicle by detecting overheated, under-inflated, over-inflated and slow leaking tires.
e) Reduces overall liability exposure for property damage, workers compensation and insurance cost increases from tire blow-outs and tire separation.
f) Helps to prevent late deliveries from unforeseen tire mishaps.
g) Provides the means to help compare various manufacturers overall tire performance (tread wear, retreads, etc) as it relates to tire expense by brand.
h) Aids in tire benchmarking by collecting, comparing and statistically analyzing tire data. Such things as tire temperature versus tire pressure levels over time, by vehicle type, vehicle weight and tire position can be documented, leading to improved performance against predetermined benchmarks.

2. What types of fleets are buying these systems?

For a system that is easy to install, monitor and maintain (including a simple method to replace sensors when new tires are installed) these types of fleets are investing in TPMS:

a) Fleets that have a greater knowledge and understanding of their tire and fuel costs. They commonly have a set standard to measure tire performance versus tire expense.
b) Fleets which have trailers hauling hazardous materials, flammable liquids, etc. often have larger liability concerns with potential catastrophic accidents.
c) Fleets that have critical on-time delivery schedules such as frozen and refrigerated goods.
d) Trailer only fleets that have independent drivers pulling their trailers. Large trailer yards generally have limited ability to manually check tire status on an on-going basis. Preventable tire lose is often considerable in this environment.
e) Fleets that tend to be more profitable, as a result of a corporate culture, which recognizes the value of a pervasive safety program. Safety awareness programs in these organizations are often found to be a core part of their maintenance agenda.

3. What are the maintenance issues with these systems, both for the systems themselves and the tires?

The ease of use & maintenance is critical to properly implementing a TPMS system which ultimately maximizes cost reductions and safety improvements. Essentially the tire and the sensor system must be considered equally when it comes to upholding a "best in class" tire maintenance program with these considerations:

a) Sensor Accessibility: Immediate and easy access to adjusting air pressure, at each wheel position, is a must if tire maintenance is to be done properly. Therefore, it is a necessary part of ongoing maintenance that the drivers participate in maintaining the proper air pressure levels while the vehicle is on the road. Externally mounted valve-cap type sensors, which must be removed and replaced each time a tire is inflated, limits the likelihood that the driver will maintain the vehicle`s tires, The risks associated with forgetting to replace the sensor or having a sensor roll under the vehicle during routine tire checks, presents a greater expense liability to the driver. Something that will likely result in ineffective use of the TPMS system. An externally mounted "flow-through" valve sensor, which allows for quick and easy air-ups, is most likely to be properly maintained both in the yard and on the road.

b) Rapid Leak Detection: Tires that are NOT discovered to be leaking, when it happens, often become losses by time they are checked during routine maintenance. Additionally, the maintenance department may not realize they are airing-up a tire that may only appear to have low pressure, when in fact the tire has a fast or slow leak. Detecting a leak and monitoring it until repairs are made can be a preventative maintenance advantage if the feature is available. It is strongly suggested that a practical tire maintenance program incorporate a TPMS system that monitors leaks in real time, allowing the driver to air-up the tires, preventing premature tire failure while on the road.

c) Sensor Malfunction: TPMS sensors should be readily removable and replaceable in the case of a malfunctioning device. The maintenance department, as well as the vehicle driver, should have access to the sensor without having to tear down the tire, such as is the case with an internally mounted sensor. The time and expense of a tire remount is one of the major concerns preventing fleet owners from investing in a TPMS system. We strongly believe that the access limitation of internally mounted sensors adds considerable expense to both the initial installation and the ongoing maintenance of commercial fleet tires. Without easy access to a potentially malfunctioning sensor, the overall value proposition a TPMS system is greatly reduced.

d) Sensor Battery Life: A low maintenance TPMS system should provide an extremely long sensor battery life. The maintenance time and expense involved with removing tire sensors, replacing the battery and then remounting the sensors (and possibly reprogramming the sensor) is considerable. A minimum battery operating life of 5 -7 years will significantly reduce the time consuming task of tracking the age of each sensor battery, on each tire, on each vehicle in a fleet.

4. How can fleets calculate ROI?

There are several things to consider when calculating the real return on investment when it comes to using a tire pressure monitoring system. A simple ROI calculator tool that reveals a bottom line number is misleading as there are several things to consider such as the following:

a) Fleets should determine all the costs directly associated by utilizing a baseline that consists of fuel costs, tire expense, time and labor to manually check tires, rate and cost of roadside assistance, etc. The improvement from the baseline costs will give the most accurate measurement for true ROI over time.

b) Tire costs should include new tires & retreads. If the tire pressure is maintained properly for the life of the casing, the fleet should be able to get multiple retreads. A retreaded drive position tire can be relocated to the trailer depending on the type of vehicle and the application.

c) Including the cost of road side assistance is an important advantage to consider in gauging a fleets investment return in a TPMS system. Since approximately half of all emergency roadside assistance calls are found to be the result of some type of tire failure, the savings can be substantial.

d) A fleet should also consider the savings that can result relative to the associated liability for preventable accidents due to tire loss, vehicle downtime and customer penalties due to late or mishandled deliveries.

e) It is a fact that fuel costs are negatively affected by running improper air pressure levels in tires. For example, a 10 PSI under-inflation level has been shown, by conservative estimates, to reduce fuel economy by more than 0.5%. A 20 PSI under-inflation level reduces fuel economy by up to 2.0%. For a truck running 100k miles per year, this could mean that the vehicle would need to use an extra 340 gallons of fuel (based on an average of 6 mpg). At current diesel fuel prices, the added expense to run an 18-tire vehicle, at 20 PSI below optimal inflation levels, would cost an extra $1700.00.

f) Most fleets will have an ROI in the range of 4-6 months, if the total costs are properly accounted for, when using an effective TPMS system.

5. Do you think we will see government legislation to mandate these systems for commercial vehicles? If so, in what type of time-frame?

There will be continued government legislation to improve fuel economy and safety. There are proposals to give incentives to fleets that are willing to invest proactively in these types of systems. It is possible that some combination of incentives and government requirements will be in place within the next 24 months. Regardless of the government`s approach, we believe that forward thinking fleets will be implementing systems based on the need for greater safety and the quantifiable cost savings.

6. What is the best method to monitor tire pressure on vehicle fleets, pre-programmed alarm level (fixed percentage baseline) or actual pressure reading user programmable systems?

Many TPMS products compromise a critical aspect of tire pressure monitoring, ease of proper air pressure level maintenance. Ultimately it gets down to any TPMS system is only as effective as it is usable by the drivers of the vehicle and the maintenance departments. Most removable sensor based TPMS rely on the existing tire pressure (at the time the sensor is attached) to determine a reference tire pressure, often referred to as its BASELINE. Here is what happens to a BASELINE pressure monitor when the sensor cap is removed:

*"When a Sensor is installed, it records the tire pressure at the time of installation as its BASELINE pressure setting. If you remove and reinstall a Sensor while the tires are warm, the Sensor will record the elevated WARM pressure when reinstalled, as its new BASELINE pressure from which to trigger an alert. When the tires cool, the pressure could fall enough to cause an alert. If possible, wait to reinstall the Sensor until the tire is cold and at the manufacturer specified cold pressure.

Cold temperatures and high altitudes reduce tire pressures. If a tire is close to its low pressure, an alert can be sounded when the pressure drops overnight due to the cooler temperatures. To correct this problem, remove Sensor and inflate tire to its manufacturer specified pressure in the morning while the tires are still cold. Make sure Sensor is off of the stem for at least 60 seconds to allow Sensor to "reset", then screw back on." *Reference: PressurePro Installation Manual

This TPMS alerts by reading the actual tire pressure and is not directly affected by the external temperature changes and inaccuracies that plague BASELINE systems.

7. The Bottom Line TPMS Consideration:

A quality TPMS system should be a key element in any fleet maintenance program; especially if overall safety improvement and cost reduction goals are to be met. While tire pressure monitoring systems are extremely effective as stand alone solutions, the greatest return is found in organizations that are proactive and diligent with their entire maintenance program. A fleet will profit from a system which is easy to install, easy to use and has an affordable price tag. The larger ROI comes from the combination of the right TPMS product and a maintenance program that focuses on safety awareness in the vehicle environment.

TireSFrequently Asked Questions

Q: What differentiates TireStatTM from other Tire Pressure Monitoring Systems?
A: Several things beginning with a ruggedized Sensor that does not have to be removed to air-up the tires. This makes the system easy to install and even easier to maintain proper tire pressure levels on individual and commercial fleet vehicles. The system monitors and alarms for Low Pressure, High Pressure, Rapid Leaks and Tire Temperature. Alarm levels are adjustable by the user and are programmable by axle.

Q: What items are included in a standard kit?
A: Each kit contains a Handheld Monitor (HM), HM Power Cords (2 each), Universal Transceiver (UT), UT Power Cord, UT Mounting Screws and Tie Wraps, Sensors, Sensor Locking Screws, Sensor Locking Screw Key, Sensor Thread Compound, Velcro, Instruction Manual, Plastic Coated User Guide.
Note: TireStatTM 4 does not include Universal Transceiver (UT) and related components.

Q: What programming is required at the time of installation?
A: The Sensors are preprogrammed to allow for a wide range of tire pressure ratings to eliminate false alarms during installation. Once installed the system is easily reprogrammed to alarm levels that are appropriate for the user. The Installation manual contains information on how to adjust the initial alarm settings which are Low Pressure Alarm (40 PSI), High Pressure Alarm (140 PSI) and Tire Temperature Alarm (185° F).

Q: Is professional installation required?
A: No. It is quite simple to install on most vehicles although professional installation is always recommended.

Q: What are the basic installation steps?
A: 1) Threaded on the numbered TireStatTM Sensors to each tire`s valve stem according to the vehicle configuration found in the installation manual. Sensors can be secured by tightening the locking screws (pre-threaded on Sensors) and/or the included Thread Locking Compound (TLC). 2) Attach the base to the Handheld Monitor (HM) or Velcro the HM directly to a convenient location on the dash. Connect one of the included power cords (hardwired to the vehicle ACC or insert the cigarette power adapter) to the HM. 3) Mount the Universal Transceiver (UT) and connect the two wire cable to power and ground. Turn on the HM by holding the front button for 6 seconds and the system will begin operation.

Q: Can the TireStatTM system operate on both 12v and 24v vehicles?
A: Yes.

Q: Will vehicles outfitted with TireStatTM interfere with each other?
A: No. TireStatTM Sensors are digitally encoded and do not interfere with each other.

Q: Does the system monitor actual Tire Temperature?
A: Yes. Unlike many systems that either do not monitor tire temperature or alarm at a relative temperature percentage, TireStatTM measures the actual tire temperature to within +/- 3° depending on environmental conditions. Additionally, the system will alarm if any tire exceeds the user programmable tire temperature.

Q: Does the system indicate that all the tires are in the normal range without having to check each tire?
A: Whenever the system is operating and is plugged into vehicle power, there is a green LED indication. If any tire falls below the low pressure alarm level the LED flashes red. The tire location with the alarm condition is indicated on the LCD display with its pressure level and tire temperature.

Q: What happens when the system alarms?
A: In the case of a Low Pressure alarm, the green power LED turns to red and begins flashing. The HM indicates (with an icon) the type of alarm on the LCD display, the tire position, the tire pressure and the tire temperature.

Q: Can the system be used on large bore tires found on construction equipment?
A: Yes. We can provide large bore adapters designed for the TireStatTM Sensor

Q: What is the limitation of Tire Pressure Monitoring Systems that use BASELINE technology?
A: Most other TPMS products compromise a critical aspect of tire pressure monitoring, ease of proper air pressure level maintenance. Ultimately any TPMS system is only as effective as it is usable by the drivers of the vehicle and the maintenance departments. Most removable Valve Cap Sensor based TPMS rely on the existing tire pressure (at the time the sensor is attached) to determine a reference tire pressure, often referred to as its BASELINE. When a Sensor is installed, it records the tire pressure at the time of installation as its BASELINE pressure setting. If you remove and reinstall a Sensor while the tires are warm, the Sensor will record the elevated WARM pressure when reinstalled. This becomes the new BASELINE pressure from which to trigger an alarm. When the tires cool, the pressure could fall enough to cause a false alarm. Obviously this must be done in order to maintain proper tire pressure. Essentially, this defeats the purpose of a tire pressure monitoring system...

Q: Can the Handheld Monitor (HM) be used as a Portable Tire Gauge?
A: Yes. It can be removed from the vehicle by unplugging the power source and it will operate on its internal rechargeable battery (see the installation manual for further details).

Q: Does the Handheld Monitor (HM) indicate when the internal rechargeable battery is low?
A: Yes. There is an icon that flashes on the LCD display indicating when the battery is low.

Q: What is the size of the Handheld Monitor (HM)?
A: The monitor dimensions are 94mm x 56mm x 20mm

Q: What type of mounting bracket comes with Handheld Monitor (HM)?
A: A small base clips onto the monitor which can be attached to the dash with the included Velcro.

Q: Does the unit have a backlight for night viewing and can it be turned on and off as needed?
A: Yes. The LCD display has a backlight that the user can turn on and off by simply pressing the button on top of the unit. The backlight also turns on in the case of an alarm but can be turned off by the user.

Q: Why is a Universal Transceiver included with every system (except a 4-tire)?
A: The integrity of the Sensor transmission signal is important to the overall performance of the system. The TireStatTM system was designed for all types of commercial vehicles, as well as RV`s and towed vehicles. Our goal is to eliminate common performance problems and make the installation as convenient as possible for all types of vehicles.

Q: Can the system be purchased without the Universal Transceiver (UT)?
A: No. Please see above for explanation.

Q: How is the Universal Transceiver (UT) installed?
A: There are 4 each mounting holes on the UT of which there are screws, washers and nuts included. Also included are tie wraps should an alternate mounting method be preferred.

Q: Does the Universal Transceiver (UT) need to be mounted under the vehicle or can it be placed inside an RV for example?
A: In certain vehicles the UT can be mounted inside the vehicle as long is the monitor does not indicate any antenna signal strength errors. It can be tested by powering the UT prior to mounting.

Q: What is the construction of the Sensors?
A: TireStat Sensors are encapsulated in a rugged nylon enclosure that contains a solid brass fitting. The electronics are protected by a moisture resistant silicone material that hardens further ruggedizing the Sensor. The silicone insulates the electronic components from extreme temperatures, moisture, salt and other corrosive materials. The result is a slightly heavier, but much more rugged vale stem tire Sensor.

Q: What is the battery life of the Sensor and are the batteries replaceable after they stop operating?
A: The Sensor battery estimated life is 5 to 7 years depending on environmental conditions and use. The system was designed so that the batteries are not replaceable to increase the ruggedness of the Sensors. Other systems with replaceable batteries can have problems due to moisture leaks. The operating life on removable battery TPMS system can be as short as 12 to 18 months, which is not suitable.

Q: Is there a Sensor replacement program?
A: Yes. Please contact Mobile Awareness for details of the Sensor replacement program.

Q: Since TireStatTM Sensors are numbered can they be relocated to a different tire location for example during tire rotation?
A: Yes. TireStatTM Sensors are numbered and preprogrammed for ease of initial installation only. Any TireStatTM Sensor can be reprogrammed for a different tire location. For this reason, replacement Sensors are not numbered since they can be programmed for any tire location.

Q: Why are there two Sensor locking methods included with the system?
A: The three (3) hex screws found on the TireStatTM Sensor are included to help prevent unauthorized removal, as well as provide an additional measure of security. It is suggested that the screws be tightened whenever there is easy access. The Thread Locking Compound (TLC) helps insure a leak-proof seal between the Sensor and metal valve stem. This is something that can not be done with a removable Valve Cap Sensor. Additionally, the TLC physically secures the TireStatTM Sensor requiring a hand tool for removal, leaving no residue once removed. Both are optional and are not required for proper Sensor installation.

Q: Does the LCD display show all tire Sensors at the same time?
A: The display graphically indicates each tire in reference to its location on the vehicle along with its respective tire pressure and temperature. Individual tire data can be viewed manually or programmed to automatically scan all the tires continuously.

Q: Why is the warranty voided if Metal Valve Stems are not used?
A: The weight of any external sensor can put stress on non-metal valve stems, potentially causing the valve stem to fatigue. This could cause the stem to leak or break down. Neither of which is safe or reliable.

Q: What is the weight of the TireStatTM Sensor?
A: 35 grams

Q: What are the dimensions of the TireStatTM Sensor?
A: 28mm x 25mm x 24mm (excluding the brass fitting)

Q: What affect will the weight of the Sensor have on wheel balance?
A: Little to no affect on large commercial vehicle tires. Passenger and LT (light truck) designated tires should be spin balanced to ensure proper weight distribution. This is easily done when converting standard valve stems to metal valve stems.

Q: Will the addition of tire chemical balancing compounds harm TPMS Sensors?
A: Potentially yes. We will not be responsible for problems that result from chemical compounds used inside a tire fitted with a TMPS Sensor.

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