-Bluetooth 4.0 TPMS Description-1.Dynamically monitor tire preure on 4 wheels at same time,prevent damage from flat tire,Improve fuel efficiency, prolong tire life span, ensure driving safety.2.It was designed as a direct tire preure monitoring system,installing preure and temperature sensor on the tire,then displaying the real-time data on phone (Android , IOS, IPad) through Bluetooth connection,3.During travel, tire preure and temperature displayed in real time and send alert when statistics' abnormal.For your safety.4.TPMS supports both Android and iOS, requiresBluetooth 4.0 or above.-External Type-Sensor Specifications:Proceor:ARM M0Working Voltage :3VWorking Current:100μAStandby Current:2.2μABluetooth Working Frequency:2.4GHzBluetooth Transmitting Power:0dBm MAXWaiting Time:5sDisplay:Phone APPWaterproof Standard:IP67Working Humidity:95% MAXTire Preure Detection Range:100-1300kPaTire Preure Detection Accuracy:10kPaTire Temperature Detection Accuracy:3Working Temperature :-30--80(Outer Sensor)Working Temperature:-40--85(Inner Sensor)Storage Temperature:-30--+85Outer SensorStorage Temperature:-45--125Inner SensorBattery Capacity:140mAh(Outer Sensor)Battery Capacity:330mAh(Inner Sensor)Battery Life:2-3Years(Outer Sensor)Battery Life:3-5Years(Inner Sensor)Sensor Weight:10g1g (Outer Sensor)Sensor Weight:33g1g(Inner Sensor)-Question And Answer-C:Could you please tell if battery is changeble for the sensor?Seller:Yes,it could.C:Can change the sensor position ?Seller:Yes,it can.-APP Description-Compatible Operating System:TMPS Support Both Android And IOS,Requires Bluetooth 4.0 or above-APP Installation-Option 1: Scan QR code on card, then download and install;Option 2: Search "BEL TPMS" in APP Store or Google play Store, then download and install. -TPMS Maunal And APP Display- 1: Support cellphone with Bluetooth 4.0 or above. DO NOT support Cellphone with Bluetooth lower than 4.0.2: Product displays by cellphone. During driving, please be careful when viewing tire preure and temperature in cellphone.3: If tire preure accelerates down or up continuously, please parking and check if there's any problem with the tire.This product can read tire preure and temperature, but it cannot avoid sudden accident caused by tire.It's important to use.4: Tire with high quality. Slightly tire leakage makes tire preure decreases over time is normal. It has nothing to do with this product installation. 5.0 4.0 Solar TPMS Car Tire Preure Alarm Monitor System Display Temperature Warning Fuel Save with 4 Sensors Notice: Please push left button over 3 minitus to turn on monitor, if it does not work, please try again after charging. 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 energyMatch sensor(charging/vent):