Introduction of the key: Right Select Key: Select key of menu M Menu Key: Long pre into menu setting Left Select Key: Long pre to turn on/off, Select key of menu Features: Type: Intelligent Solar TPMS Car Tire Preure Solar power charging, dont need to charge by connecting car cigarette lighter Colorful LCD Digital displaying, clear to show tire information Rear-time monitoring preure & temperature of 4 tires Low air preure/high temperature alarm High Temperature / Leakage / Low Battery Alarm Intelligent Shock Boot when car moving, dont need to turn on/off Wirele connect by sensors, easy install Two units (PSI / Bar) changeable, you can set the one you like. External Sensor: Easy to install, convenient to replace Battery: built-in CR1632 button cell Working voltage: 2.0 - 3.6V Working environment: -30 ~105 Deg.C Preure test range: 0-116 Psi / 0-8.0 Bar Preure accuracy: plus or minus 0.1bar Waterproof grade: IP67 Transmiion frequency: 433.92MHz Monitor: Battery type: 280mAh Li-ion battery Working voltage: 2.6-3.6V Working environment: -20 ~70 Deg.C Transmiion frequency: 433.92MHz Preure unit: psi / bar Temperature unit: Deg.C / Deg.F Package Included: 1 set Car Tyre Preure Monitoring System Car TPMS Tyre Preure Monitoring System Solar Power (type A and B) Features: 100% new and high quality. Solar orUSB charging,much convenient and practical. Colorful LCD digital displaying, clear to show tire information. Wirele connect by external sensors, easy install. Built-in vibration sensor, the car automatically turns on when starting, and automatically turns off when the car stops. Note: The host must be turned on before installing the sensor. Pre and hold the left button for 3 seconds. For the first time, it is recommended to charge with USB for 1 hour. Function: Rear-time monitoring preure & temperature of 4 tires Low air preure /High tire preure alarm High temperature / Leakage / Low Battery Alarm Specifications: Display Material: ABS + Metal Working Temperature: -20 -- +70 Working Frequency: 433.92MHZ 20MHZ Voltage: 3.7V Current: Working 15mA, Standby 50uA Sensors Material: ABS + Metal Working Temperature: -20 -- +85 Working Frequency: 433.92MHZ 20MHZ Voltage: 2.0-3.6V Current: Static 1uA, Dynamic 15mA Tire monitoring Range: Preure 0-3.5bar Accuracy: 0.1bar Battery Life: 1-2 years Package included: 1 set x Car Tyre Preure Monitoring System Car Tire Manometer Barometers Tester Tool with Electronic Digital LCD Tyre Air Preure Gauge Meter For Auto Car Motorcycle Features: 100% Brand new and high quality LCD screen display with backlit for easy reading Small portable design, easy to hold and operate Preure units available: PSI, BAR, KPA, KGF/CM2 Accurate and quick measuring, reliable to use Manual power on/off and auto power off for power saving LED light at gauge nozzle, convenient to use even at night ThisMini Tire Preure Gauge with easy-to-read LCD screen, is used tomonitor your tyre preure, thereby extending tire life, increasing fuelefficiency and ensuring your safety.It is suitable for measuring tireair preure of cars, motorcycles,etc. Specifications: Test range: 0-150PSI / 0-10.0 Bar Accuracy: 1PSI Resolution: 0.5PSI Units:PSI, BAR, KPA, KGF/CM2 Power supply: 1*3V CR2032 button battery (Included) Product size: As the picture Material: ABS