Features: Tire pressure sensor is interchangeable for rubber or metal sensor stem, it can replace most sensor. Highest grade material for better performance and reliability. This tire pressure sensor is built-in an automotive-grade battery for severe weather conditions use. High quailty material ensure it will never deform, and provide better performance. Easy to use. TPMS sensor can be easily programmed products. Package Includes: 4x Tire Pressure Sensor Specifications: Material:ABS Color:Black Sensor Height: Approx.1.84cm/0.72inch Quantity: 2 rounds/4 rounds Measuring range: 0.7-7BAR (10psi~100psi), error +-0.1BAR Working voltage: 2.1V~3.6V; Operating temperature range: -40~125 8051 compatible microcontroller 14K byte MTP for customer/256 byte RAM- RF: 2.4G BLE transceiver; BLE4.0/4.1/4.2 compatible. Sleep current: 0.3uA @25C, 2.5uA @105C, 3.8uA @125C note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.