Hella's TPMS is extremely flexible and can be installed in any vehicle not originally equipped with an OE system or has been fitted with upgraded or custom wheels.  In the event of a wheel change with an OE-equipped system, the Hella TPMS will allow the vehicle to stay in compliance with federal regulations.

Hella's new system uses tire sensor valves in place of conventional tire valves.  The sensor valves transmit the tire's pressure and temperature by radio to the control unit, which forwards the data to the cockpit display.  In the event of sudden pressure loss, the control unit triggers an optical and acoustic alarm.  Additionally, the system also warns of overinflation and slow loss of pressure.

The TPMS display can be placed anywhere in the cockpit at the owner's discretion.  An exclusive feature of the system's display is the ability to change color to match the vehicle instrument lighting.  Seven different colors are available: blue, red, green, orange, light orange, white, and light blue.

The display shows the position of each tire on the vehicle and displays pressure and temperature for each tire individually.  The display can be easily reprogrammed after a tire change or rotation, and features bars and sections on the tire symbol, which change according to the amount of air pressure. 

The temperature gauge on the sensor allows the driver to determine the accuracy of the readings as the tires expand and contract from outside air temperature.  Each tire can be monitored separately by highlighting the appropriate tire symbol on the display.  The air symbol appears along with a warning symbol below to indicate a sudden loss of pressure such as a blowout.

The Hella TC-400 system is compatible with nitrogen-filled tires but is not suitable for use in heavy-duty applications.  It comes complete with an adaptable color display, four sensor valves, central data unit, wiring harness, step-by-step mounting instructions, and a user's manual. 

Although the Hella system comes with four sensor valves, it can accept up to seven sensors, which also makes it ideal for use with trailers and dually trucks.  Additional sensor valves are available from Hella separately.