Pap ago! Go Safe Tire Pressure Monitoring System T. RVS-TPMS100US pn Checking your tire pressure had sever bison satin Simply attach the 4 sensors 1 your vehicle's tie valve stems and plug your receiver into your vehicle's 12V outlet. The sensors read pressures from 0 to 57 psi and use radio frequency wireless technology fo communicate the data to the receiver User defined pressure ranges can alert you. Set your receiver to alert vou whee vivid tires exceed br fall below an adjustable pressure range.