Product specifications: Material: rubber + alloy. Temperature measurement range: -40C to 125C. Pressure Monitoring Range: 100-900kPa Accuracy of pressure measurement: 10 kPa. Transmission power: 5-8dBm Installation Type: Snap-in Frequency: 433 0.05 MHz. OE reference number: A4479050500 A4479051704 Function: Tyre pressure sensors can detect and report tyre pressure information in real time. TPMS keeps the tyres in the correct pressure range and warns of potentially unsafe driving. Compatible with: For Merc-edes V-Class W447 01/2014-12/. For Merc-edes Marco Polo W447 03/2014-12/. For Merc-edes Vario 01/2014-12/ For Merc-edes Viano W639 06/2014-12/ For Merc-edes Vito W447/W640 07/2014-12/. For Merc-edes EQV 01/-12/ For Merc-edes Metris 01/-12/ Package list: 4 x tyre pressure sensors. Note: No instructions included. We strive to provide you with the highest quality products and the best customer experience. If you need help, please feel free to contact us. All emails will be answered within 24 hours. _x000D_ _x000D_