Go to Shanghai central hospital
Transfer to no.15/21 at people's Square Station
The function of the step-down line is to rece the voltage
the step-down line can convert the 12V voltage of the car electrical appliances into 5v2a, which is convenient for the car recorder to get power, can make it work safely, and also make the wiring of the recorder more hidden, and the wiring in the car is beautiful
because the car is only equipped with a cigarette lighter interface, if the cigarette lighter is occupied by the recorder, it will be more troublesome to charge the mobile phone. In addition, many recorders have parking monitoring function. If you want to use this function, you don't need to connect the car to the normal power supply. Many people will choose to use the step-down cable to connect the fuse box or battery
extended data:
the difference between the power on line and the step-down line on the recorder:
1. Different functions
the power on line is to keep the power unobstructed, and the circuit will not run smoothly because of the line. The step-down line is to protect the recorder, because 24-hour operation will lose its life, The step-down line can guarantee to rece the loss of power
2. Different instruments
because of their different functions, there will be great differences in the proction of instruments
3. Different application technologies
because the functions of the two devices are completely different, in order to correspond to their functions, different technologies will be used in the application of technology