Specification Name: LED 3 in 1 voltmeter Material: ABS Bracket material: aluminum alloy (dazzling style is stainless steel) Size: 70*33*19.5mm, power cord length: 48cm Blister paper card size: 15.5 * 12 * 2cm Bracket size: 28*55mm Display: voltage / time / temperature Light color: blue, red, white, green Voltage range: 6V-30V Waterproof rating: IP67 Features: large screen digital display, the figures are bright and easy to see, still clearly visible during the day Voltmeter set contains: 1*Voltmeter+1*Fixing base+2*Ties+2*Screws Package contains: 1*voltmeter set or 1* bracket Time setting: 1. power supply state, long press the button 2 seconds after the hour segment flashing, said to enter the hour setting at this time each short press the button, increase 1 hour (24-hour system). 2. After the hour value is set, press and hold the button again for 2 seconds, the minute segment flashes, indicating that it enters the minute setting, at this time, each short press of the button increases by 1 minute. 3. After setting the minutes, press and hold the button again for 2 seconds to exit the time setting.