HeartHorse Cigarette Lighter Socket 12V Dual USB Cigarette Lighter Adapter Cigarette Lighter Socket with Voltmeter LED Display for Rocker Switch Panel on Car Boat Marine RV -Green-

Green indicator light 4.8V dual USB vehicle charging + alarm voltage detector with 1m harness Product net weight: 140g Product appearance: black Material: ABS Product size: 105mm*55mm*46.5mm Products include: double-hole panel *1 dual USB car charger *1 color screen voltmeter *1 1M wire harness *1 10A safety piece *2 screws *4 Wiring: "+" and "-" are marked on the back, which should be connected to the positive and negative poles of the power supply Opening size: 28mm Operating voltage: 12/24v Scope of application: truck, rv, coach, boat, yacht, etc Usage: it can charge all mobile phones, tablet computers and on-board appliances. All vehicles with operating voltage of 12V-24V can be installed and used Color screen voltmeter Product size: 49.6* 36.6mm Product weight: 24g Voltage level / 7-30v/(12/24v automatic detection refresh rate) Low voltage alarm /11V (12v mode) 22V (24V mode) 12/24v system automatic detection (compatible with both systems) When the 12V mode voltage is lower than 11V and the 24V mode voltage is lower than 22V, the reverse polarity input protection system automatically measures the dc voltage and gives a low voltage alarm Double USB car charger Product size: 55.5*36.8MM Product weight: 31 grams Product lighting color: green Output: 4.8a 5V With waterproof dust cover