Smart TPMS Cigarette Lighter Tire Pressure Monitoring Alarm System with 4 Internal Sensors Item Type: Tire Pressure Monitoring System Material: ABS Sensor Voltage: 2.0-3.6V Monitor Voltage: 12-24V Working Frequency: 433.9200MHz±0.1MHz Working Voltage: 5V Sensor Working Current (Quiescent): ≤1uA Sensor Working Current (Dynamic): ≤15mA Monitor Working Current (Quiescent): ≤0uA Monitor Working Current (Dynamic): ≤30mA Sensor Working Temperature: -40℃-+125℃ Display Working Temperature: -40℃-+70℃ Pressure Detection Range: 0~72.5psi, 0~5 bar Charging: Cigarette lighter socket charging Internal Sensor Battery: CR2050 button battery (built-in) Battery Capacity: 300mAh Battery Lifespan: 5 years Application: Suitable for general vehicles such as minibuses, pickup trucks, SUVs, and cars. Functions and Features: 1. Real time monitoring of tire pressure and temperature. 2. Smart sleep mode, save power. 3. Tire leak warning 4. Visual and audible warnings for abnormal tire pressure and temperature 5. Datas of 4 Tire pressure and temperature are clear at a glance 6. Fixed rod or PSI pressure unit for choice 7. Fixed temperature unit for selection (This product can monitor tire pressure and temperature in real time and issue warnings. However, accidents cannot be prevented, so we are not responsible for direct or indirect losses caused by damage to this product.)