L1 Car HUD OBD II Head Up Display Speed Projector Overspeed Alarm System, 501 Original

L1 Car HUD OBD 2 II Head Up Display Windshield Speed Projector Auto Overspeeding Water Temp Warning Alarm SystemFeature:1. Speed2. RPM3. Water temperature4. Voltage5. Display mileage when engine stops6. Speeding alarm7. RPM alarm8. Low voltage alarm9. Water temperature alarmSpecification:Applicable vehicle model: for cars with OBD 2 interfaceInstallation: plug and playWorking voltage: OBDII 12VMaximum working current: 150mAStandby working current: