1. The electronic refitting instrument has the function of electronic clock, real-time voltmeter and so on. It is convenient to watch the time and pay attention to the locomotive voltage environment at any time during driving. 2. Time setting instructions: (1). In the power supply state, long press the button for 2 seconds and the hour segment flashes, indicating that the hour setting is entered. At this time, press the button shortly every time for once, which increase by 1 hour (24-hour clock). (2). After the hour value is set, press and hold the button for 2 seconds again, the minute segment flashes, indicating that the minute setting is entered. At this time, press the button shortly every time for once, which increase by 1 minute. (3). After setting the minutes, long press the button again for 2 seconds to exit the time setting. 3. Wiring method: The red wire is connected to the positive pole of the battery, the black wire is connected to the negative pole of the battery, and the blue wire is connected to the main power switch. 4. Features: Low voltage (12V or less) and high voltage (16V or more) flashing warning function. 5. Enclosure strong, waterproof and dust-proof one step in place, so that you can use at ease. 6. Different color configurations. According to different preference. Choose the color that you like. 7. Parameters: Voltage range: 6V-30V Power cord length: 1.2m Protection level: IP67
