Solar Powered Wireless Digital Tire Pressure Monitor System 4 Internal Sensor Automobile Tire Pressure Monitoring

Type: Intelligent Solar TPMS Car Tire Pressure
Receiving frequency: 433.92MHz
Power supply mode: USB power supply, solar charging
Working voltage: DC 5V-12V input
Pressure unit: bar/psi
Temperature unit: ℃/℉
Working temperature: -20~+85℃
Storage temperature: -40~+125℃

Internal sensor
Transmitting frequency: 433.92MHz
Pressure range: 0-8 bar, 0-116 psi
Default low pressure alarm value: 1.8 bar
Default high pressure alarm value: 3.0 bar
Pressure accuracy: ±0.1 bar, ±1.5 psi
Working voltage: DC 2.0-3.6V
Working temperature: -20~+85℃
Storage temperature: -40~+125℃
Waterproof rating: IP67
Battery: Built-in CR2450 button battery
Battery life: 2-3 years typical value