Bluetooth 4.0 TPMS - Description- 1.Dynamically monitor tire pressure 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 pressure monitoring system,installing pressure and temperature sensor on the tire, then displaying the real-time data on phone (Android , IOS, IPad) through Bluetooth connection, 3.During travel, tire pressure and temperature displayed in real time and send alert when statistics"'" abnormal. For your safety. 4.TPMS supports both Android and iOS, requires Bluetooth 4.0 or above. -Question And Answer- C: C ould 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 pressure and temperature in cellphone. 3: If tire pressure accelerates down or up continuously, please parking and check if there"'"s any problem with the tire. This product can read tire pressure 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 pressure decreases over time is normal. It has nothing to do with this product installation. -Extrend Type- Sensor Specifications: Processor:ARM M0 Working Voltage :3V Working Current:100A Standby Current:2.2A Bluetooth Working Frequency:2.4GHz Bluetooth Transmitting Power:0dBm MAX Waiting Time:5s Display:Phone APP Waterproof Standard:IP67 Working Humidity:95% MAX Tire Pressure Detection Range:100-1300kPa--Tire Pressure Detection Accuracy:10kPa Tire Temperature Detection Accuracy: 3 Working Temperature : -30--80 (Outer Sensor)--Working Temperature:-40--85(Inner Sensor) Storage Temperature:-30--+85Outer Sensor)--Storage Temperature:-45--125Inner Sensor Battery 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)