TPMS Solar Power TPMS Car Tire Preure Alarm Monitor Auto Security System Tyre Preure Temperature Warning LCD Display Host parameters:Receiving frequency: 433.92MHZ0.02MHZWorking temperature: -20C~85CSolar charging: about 6 daysShutdown/sleep current: 50UAWorking current: 5MAWorking voltage: 5VPreure unit: BarBuilt-in sensor parameters:Transmiion frequency: 433.92MHz0.02MHZPreure range: 0 3.5 barDefault low preure alarm value: 1.8 barDefault high preure alarm value: 3.2 barPreure accuracy: 0.1 bar / 1barOperating voltage: DC+2.0 3.6VWorking temperature: -20 ~ 85Storage temperature: -40 ~ 125Waterproof level: IP67Battery model: CR2050External sensor parametersReceiving frequency: 433.92MHZ0.02MHZSensor chip: -20~85Modulation method: ASKWorking temperature: -20~80Preure range: 0-3.5 BarDefault low preure alarm value: 1.8 barDefault high preure alarm value: 3.2 barPreure accuracy: 0.1 bar / 1barWorking voltage: DC2.0 3.6VWorking temperature: -20 ~ 85Waterproof level: IP67Battery model: CR1632