If you connect D2 product with Wiegand wiring that you would like to use with a wiegand port of DM20 or a wiegand port of other Suprema devices, you should follow the procedure below to apply it to your device.
1. Go to [USER] menu and select CSN for card type.
2. Click [Enter Manually] and then, click [Use User ID] if you are using AoC.
**If you have ever tried to connect D2 to RS485 wiring to RS485 Master, you should press [configuration reset button] on the back of the D2 device with 4 times.