Openpath Avigilon Readers and ACUs communicate via RS-485. The following wire types are compatible, listed in the order of preference which impacts distance.
...
Ideally, use one twisted pair for GND and VIN (power) and one twisted pair for +B and -A (data).
Wiring Information
| Iframe | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
...
| Info |
|---|
Note: For elevators, all relays and readers must be connected to the same ACU. If you need more than four access-controlled floors or readers, add the Openpath Avigilon Elevator Expansion Module. |
...