Features: 1. Compact installation does not take up space 2. High-efficiency solar panels super endurance 3. Support tire position interchange 4. Long receiving distance stable signal 5. You can place spices into the base 6. Automatic sleep makes it easier to boot 7. Large volume alarm tone Specification: TPMS Specification: Working voltage: 3.7-5V Storage temperature: -30-90 Celsius Working temperature: -30-85 Celsius RF transmission frequency: 433.92MHz 50KHz RF signal receiving sensitivity: -90dbm Display: LCD Bright screen working current: 6mA Black screen working current: 4mA Size: 85*95MM Battery: 400 mAh (built-in) External sensor parameters: Working voltage: 2.1-3.6V Storage temperature: -30-90 Celsius Working temperature: -30-85 Celsius Temperature resolution: 2 Celsius (25 Celsius) Pressure range: 0-6.0Bar Pressure resolution: 0.1Bar Waterproof rating: IP67 Transmitting power: 10dBm Transmission frequency: 433.92MHz Size: 21mm (diameter) * 17mm (height) Battery: CR1632 (built-in) Material: includes: 1 x Car TPMS(Built-in Battery) 1 x Bracket 4 x Sensors (External) 1 x USB Cable 1 Set x Installation tool(Adhesive Tape Wrench Screws) "