The original switching power supply (DC 12V 4A) can normally load up to 5 electric locks or 4 magnetic locks of 270 kg force, and the power supply of its corresponding card reader and controller, if there is insufficient power supply or excessive electric lock load in practical applications. External power supply can be used. If the system is connected with an electronic lock or an electric lock port, it is recommended to use an external power supply, because the impact current of the electric lock port is as high as 3A, and the original power supply cannot resist its impact and cannot guarantee the sufficient power of the system.

Suggestion:◆ Choose the external 8 ~ 15A DC 12V switching power supply, the switching power supply to all the locks of a controller at the same time.

Note: Since the switching power supply has no high-frequency ripple interference, it is suitable for the power supply of the main controller and card reader to avoid the possibility of high-frequency ripple interference. Electric lock on the quality of the power supply is not high, as long as the power is enough. Therefore, the external power supply to the lock can be a switching power supply. Switching power supply, large current, high effective power, low price, suitable for locking power supply. In addition, it should be noted that the wire connecting the electric lock must be a wire with a cross-sectional area greater than or equal to 1.0 square millimeters, and the longest cannot exceed 100 meters.