Universal Car Wireless Solar Energy TPMS Tire Pressure Alarm System External Tire Monitor

Host parameter: 1. Operating voltage: 3.7-5V 2. Storage temperature: -30 -90 degree Celsius 3. Working temperature: -30 -85 degree Celsius 4. RF Emission frequency: 433.92MH+/-50KHz 5. RF Signal sensitivity: -90dbm 6. Display mode: LCD Color 7. Bright screen current: less than or equal to 6mA 8. Black screen current: less than or equal to 4mA External sensor parameter: 1. Operating voltage: 2.1-3.6V 2. Storage temperature: -30 ~90 degree Celsius 3. Working temperature: -30 ~85 degree Celsius 4. Pressure range: 0-6.0Bar 5. Pressure resolution: +/-0.1Bar 6. Waterproof grade: IP67 7. Transmitted power: less than or equal to 10dBm 8. Emission frequency: 433.92MHz