Specification :Material: PC+ABSInput voltage:12V-24VOutput voltage: Dual QC3.0Operating temperature -40, maximum 80Instructions+'to the positive pole'-'to the negative pole'Product features: Flame retardant, high temperature resistance, corrosion resistance, durability and deformation resistance.Six layers of protection:1. overload protection2. About temperature protection3. Short circuit protection4. Overload protection5. Overcurrent protection6. Sudden wave protectionProduct installation:1. Select the installation position of the car charger to open the hole or keep the installation position.2. Disassemble the board, install the car charger, and tighten the nut to fix it.3. The positive electrode (red line) of the car charger is connected to the fresh-keeping box of electric power; The negative electrode (black line) is afraid4. Connect the positive and negative poles of the car charger and fix the position of the car charger.Kindly Notes:1. The voltage will display by connecting to the battery.2. Since the iPhone series does not support fast charging, charging the iPhone is normal speed.3. For mobile phones that support fast charging, you must use the original charging cable or fast charging cable to achieve fast charging.4.For vehicles, it's recommended to get power from fuse box, while for the motorcycle, better connect to the wires of the key switch.Package Includes:1x Dual USB Ports Charger2x Blue Terminal1x Red/Black 60cm wire with fuseorPackage Includes:1x Dual USB Ports Charger2x Blue Terminal