TPMS Tire Pressure Monitoring System 4 External Sensors Real Time Display Temperature Pressure 0 To100PSI for Car RV Trailer Item Type: TPMS Tire Pressure Monitoring SystemMaterial: ABS and MetalMaster: SY36201 Contact Name: BLE4.1 Communication Mode: Bluetooth 5.0 Operating Voltage: 2.1-3.3V Static Current :≤1μA Bluetooth Operating Frequency: 2.4ghz Bluetooth Transmit Power: 4dB Response Time :≤ 4S Display Mode: for APP type Waterproof Grade: IP67 Working Humidity: 95%MaximumTire Pressure Monitoring Range: 0-100 psi Tire Pressure Monitoring Error: soil 3PSI Operating Temperature: -30- +70°C Storage Temperature: -30- +70°C Battery Life: 2-3 years Battery: Button battery CR1632 140mAhx4 (external) (shipped with built in battery) The tire pressure monitor APP supports the display of four sensors, or the display of three sensors, or the display of two sensors, you can switch freely Application: Suitable for car, trailer, RV, motorcycle, electric car, ATV, etcRequires mobile phone support Bluetooth version 5.0 or above