Relay module for a second door
A module that connects to the door station via RS485 and controls a second door or gate. With it, you can use the same intercom to open both the front door and the garden gate, for example.
The module has a relay for door control and reads back the door status, so you can see on the indoor station whether the door is open. An external exit button can also be connected to it.
The power supply is separate: the module runs on 12 volts DC.
What you can count on
- Control a second door: in addition to the door that the door station switches itself
- RS485: two terminals for the connection to the door station
- Door status feedback: the station shows whether the door is open or closed
- External exit button: a button indoors can be connected directly
Power supply separate
The module runs on 12 volts DC and therefore needs its own power supply. This is not included and does not come from the door station.
The details at a glance
| Function | Relay module for second door |
| Connection | RS485, 2x |
| Relay | Door control |
| Door status | Yes |
| External button | Yes |
| Power supply | 12 VDC |
| Model code | DEE1010B-S2 |
The full specification is in the Dahua datasheet.
Frequently asked questions
What do I need this module for?
For a second entrance. The door station switches a lock itself; if you also want to open a gate, a garage door or a second door, you do this via this module.
Do I need a separate power supply?
Yes, 12 volts DC. This is not included.
Where is the module installed?
Indoors, near the meter cupboard or close to the second door. The connection to the door station runs over RS485.
