Features: Supports USB cable charging and solar charging, ensuring continuous operation of the tire pressure monitoring system. This TPMS includes five alarm modes: fast leak alarm, high/low pressure alarm, high temperature alarm, and sensor low battery alarm. Large LCD screen with auto backlight for easy reading in any lighting environment. Supports smart backlighting. Receiver with adjustable angle, supporting 45° up and down and 45° left and right adjustment. Split design for more convenient disassembly and assembly. Specifications: Receiver Parameters: Power supply mode: USB power supply, Solar power supply Working voltage: DC 5V Pressure unit: bar / psi Temperature unit: °C / °F Operating temperature: -20°C to 85°C Storage temperature: -40°C to 125°C Built-in Sensor Parameters: Pressure range: 0–5.6 bar / 0–81 psi Low pressure alarm value: 1.8 bar High pressure alarm value: 3.2 bar Pressure accuracy: ±0.1 bar / ±1.5 psi Waterproof rating: IP67 Battery: Built-in CR2450 button battery (non-removable) Battery life: 2–3 years External Sensor Parameters: Pressure range: 0–5.6 bar / 0–81 psi Low pressure alarm value: 1.8 bar High pressure alarm value: 3.2 bar Pressure accuracy: ±0.1 bar / ±1.5 psi Waterproof rating: IP67 Battery: CR1632 button battery (removable and replaceable) Battery life: 1.5–2 years Package List: 1 x Receiver 4 x Sensors 4 x Anti-theft nuts 1 x Anti-slip pad 1 x USB cable 1 x Wrench