Wiegand 26-bit protocol is the standard for access control card readers connecting to access control panels using 4-wire connections carrying card data and reader status signals for doors and gates.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VCC | 12V supply to reader | PWR |
| 2 | GND | Ground | GND |
| 3 | DATA0 | Wiegand data 0 green | BUS |
| 4 | DATA1 | Wiegand data 1 white | BUS |
| 5 | LED | LED control red wire | I/O |
| 6 | BEL | Buzzer control orange | I/O |
Wiegand 26-bit protocol is the standard for access control card readers connecting to access control panels using 4-wire connections carrying card data and reader status signals for doors and gates.