Model No. LF-TPMV204: Key features:It is suitable for valve type sensors, receivers, displays of four-wheel automobiles, can examine the actual temperature and pressure of the tyres under both static and driving states. If the indicator light is green, that means all tyres are working under normal air pressure and temperature, otherwise it will turn to red or flash always and make alarm sound. Technical data:Receiving monitor: Central working frequency: 433.92MHz Test sensitivity in shield room: ≥-75dBm Receiver working voltage: 12VDC or 24VDC Receiver current consumption: when display:≤110mA when no display:≤35mA Transmitter of sensor: Emitting power: ≤-35dBm Emitting frequency: 433.92±0.04MHz Temperature excursion: ±50kHz Max. detecting pressure: 9.9Bar(0.99Mpa) Detecting precision: ±O.1Bar(0.01Mpa) Battery voltage: 3VDC The weight of V sensor: 17g