1 Hard wire kit for Mini Serial dash cam,such as for Mini 1,mini 2 dash cam. 2 This hard wire is used as transforming 11.6V/42V to 5V,with built-in precise switching power supply module,output voltage is more stable. 3 The hard wire connect to car battery or fuse box constant power for power source,so its dash cam can keep powered on even car turned off. 4 With function of auto detect battery voltage,it can cut power supply when voltage is too low,make sure the car can start normally. 5 With reverse connect protection, output short circuit protection, over current protection, over temperature protection, stable performance. Specification: Connector: Micro USB Length: 3.0 meter above High efficiency:>96% Input range:DC 11.6-42 V Output voltage:DC 5 V Output current:2.1 A Low voltage protection:11.6 V Working Temperature: -40 ~ 85 Degree