Techstick Car HUD P9 Smart GPS Heads up display with OBD2, Two Display Way, Over Speed Warning Alarm, Water Temperature, Voltage, Compatible with OBD II EOBD System Model Cars

Key functions:

Long push right: Push right the wave button 5 seconds, then all LED will light, it means clear the engine fault code.

Long push left: Push left the wave button 5 seconds to turn off the buzzer, do it … Continue reading