Function with TPMS system ( JET-400 and JET-400C ) to boost the sensor signal TPMS/Tire Pressure Monitoring System for Truck Assembly Chart:1pcs*Signal Booster1pcs*Instruction sheet4pcs*wire ties1pcs*wireLenghth - 2 meters Technical Data: Working Temperature -40~85 (-40°F to 185°F)Working Voltage DC 12V~DC 24VWorking Frequency 433.92 MHZ