Solar TPMS Car Tire Preure Alarm Monitor System Display Temperature Warning Fuel Save with 4 SensorsNotice: Please push left button over 3 minitus to turn on monitor, if it does not work, please try again after charging.When you receive the package and turn on the receiver, the receiver displays ''--'' or ''00'', please don't worry.You only need to mount the sensor on the tire, wait for about 1 minute, and you will see the display shows the preure and temperature of the tire.Features:1: Anti-theft nuts;Easy installation;2: High and low preure, leak alarm;3: Sensor accurate wirele transmiion;4: Environmental protection solar cells;5: LCD display screen, Simple user interface;6: Air leakage alarm, prevent tires from bursting;7: High accuracy, Using Freescale imported chips;8: Real-time monitoring tire preure and temperature;Specification:Display: LCD color screenSensor Battery life: 2 years (Replaceable)Packing size: 21 x 15 x 6cm (8.3 x 6 x 2.4 in)Package weight: 375gOperating Voltage: 3.7V-5VOperating temperature: -20--75Adapt to temperature: -30--80 RF Transmit frequency: 433.92MHz 50KHzRF Operating Current: -90dbmMaterial Type: Plastic+Solar energyPackage Contents1 x Display screen, 4 x Sensor;1 x English Instruction Manual, 1 x Plastic Cover;1 x USB Cable, 4 x Screw Ring, 1 x Plastic Ring.Match sensor(charging/vent):Long pre ''menu key'' 3 seconds to ''U/S'',then short pre ''menu key'' several times to enter''LID'' interface,it shows ID of four tires and car icon.Short pre ''leftight select key'' to learn ID opertion.Select tire you plan to learn ID of sensor by pre''menu key'',default setting is ''FL''>''FR''>''RR''>''RL.When tire is selected,display new ''ID'' in receiver after active sensor's ID(internal sensor active by charging/vent tier,externsl sensor active by repeat installation).Do the same operation to match other three sensor.When all sensor are matched,short pre ''menu key'' to save and go to ''Ex''.Product description:Solar TPMS is in the ordinary TPMS (tire preure monitoring system) based on a flight-type upgrade, with features: real-time monitoring tire preure, tire temperature, permanent life! Thus solving the general TPMS (tire preure monitoring system) repeated charging, occupying the cigarette mouth, occupy a series of DVD display and other deficiencies!The composition of the solar TPMS is the same as that of the ordinary TPMS (tire preure monitoring system), which is composed of a solar TFT screen receiving display and four preure sensors / emitters. As the generous power generation panel long life, to provide at any time charging, so that the reception of the monitor power storage more robust and lasting; even in the absence of sunshine in the dark environment, rain and snow weather conditions can still serve more than 15 days, There are USB charger interface, dual charging system device to ensure that the machine really permanent life.