Wirele Car Tire Preure Monitoring System LCD Digital Display Auto Tyre Preure Temperature Warning Alarm TPMS Monitor with 4 External SensorsFeature:Real-time monitoring of tire preure and temperature.Flat tire warning and temperature balance.LCD display, simple user interface.The display can be directly connected to the cigarette lighter socket.Buzzer alarm and display the alarm value.It can support four frequency bands, and the positions of the frequency bands are interchangeable.Visual and audible warnings of abnormal preure and temperature.External sensor: easy to install and easy to replace. Dustproof/waterproof/anti-theft.Specification:Working voltage: 2.6-3.3VWorking current: static 50uA, working current 15mAWorking temperature: -30 - 85Accuracy: Temperature: 1, preure: 0.1barNote:If you need a built-in sensor, please contact us, now we are selling an external sensor.Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow slightly measuring deviation due to manual measurement. 1 X Tire Preure Monitoring System4 X External Sensors1set X Acceories (Tools)