Fast QC3.0 USB Cup Holder Car Charger Adapter Cigarette Lighter Voltmeter 12V Socket Display Temperature Waterproof power switch Specification:Name: car chargerMain body size: 82*82*92mmMain body color: transparent brown-blackBody material: PC flame retardant materialPlacement diameter: greater than 68mm cup positionInput voltage: 12-24VOutput current: fast charging 3A, dual usb 2.1A+2.1ACigarette lighter power: 40W * 2 (not cigarette lighter)Wiring mode: comes with cigarette lighter jackLED digital display: red, yellowScope of application: connected to 12-24V DC power, USB can be charged to cell phones, tablets, navigators, etc.Product features: multi-protocol fast charging, voltage and temperature monitoring, dual cigarette lighter to take power, flame retardant, high temperature resistant, moisture resistantProduct advantages:1, real-time monitoring of air temperature and voltage2, a super fast charging port + dual USB fast charging interface3, the use of outdoor environment standards for structure and circuit design4, 60mm power cord comes with a convenient replacement bin fuse boxCaution1It is strictly forbidden to use electric vehicles and engineering vehicles with more than 24V power supply2. The charging cable must be a regular standard data cable with 4 cores to carry out USB fast charging.3, temperature monitoring is to monitor the real-time air temperature around the product4, the product fast charging work voltage monitoring values will have some deviation (no-load voltage values are accurate)