How should the metal access controller be wired?

The wiring of the metal entrance guard controller is as follows: (Generally, metal entrance guards have multiple interfaces) With FCARD card reader:

Red: universal access voltage (+DC9- 12VDC)

Black: grounding wire (safety and anti-static)

Green: data 0 white: data 1

Blue: Generally, it is an indicator light.

Yellow: buzzer (can be used as an external alarm device)

Brown: Wigan Line 26/34

Purple, orange: doorbell wiring.

According to the metal access controller to link the lines, in weak current equipment, wiring also needs to pay attention to safety.