Wiegand protocol uses a 4-wire connection between access card readers and access control panels for keycard and fob authentication, used in smart home and commercial building access control systems.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VCC | 12V power to reader | PWR |
| 2 | DATA0 | Wiegand data 0 green wire | BUS |
| 3 | DATA1 | Wiegand data 1 white wire | BUS |
| 4 | GND | Ground black wire | GND |
| 5 | LED | LED control output | I/O |
| 6 | BUZZER | Buzzer output | I/O |
Wiegand protocol uses a 4-wire connection between access card readers and access control panels for keycard and fob authentication, used in smart home and commercial building access control systems.