In order to connect a Gatekeeper-X with the Symmetry controller an IO extender is necessary.
The IO pins as they come in the back of the Gatekeeper have an output voltage of 3.3V and can not be used directly.
The IO extender shifts the Wiegand signal generated by CortexFramework to 5V.
The IO extender has to be placed in the back of the Gatekeeper.

Plug the IO extender in the connector in the back. Follow below schema to connect the Paxton Net2 plus controler.
Connect D0, D1 and GND.


Pin number |
Signal |
Description |
1 |
GND |
|
2 |
D1 |
Wiegand |
3 |
DO |
Wiegand |
4,5,6 |
IO1 |
4: Relay 1 NC 5: Relay 1 COM 6: Relay 1 NO |
7,8,9 |
IO2 |
7: Relay 1 NC 8: Relay 1 COM 9: Relay 1 NO |