Wiring

Chamberlain Security+ wiring:

ratgdo v2.5i, 2.52i, 2.53i

ratgdo32 disco

 

Connect the red white and black wires to the respective terminals on your garage door opener. The wire terminals with orange push buttons are pass through connectors for your door opener's wall control panel and obstruction sensors.

Dry contact wiring:

ratgdo v2.5i, 2.52i, 2.53i

ratgdo32 disco

Connect the red wire to your door opener's positive (+) wall control terminal and the white wire to the negative (-) wall control terminal.

The limit switch wiring is necessary in order to have the door status and to enable discrete open/close commands from ratgdo. Without the limit switches, the ESP Home firmware can only toggle the door.

Use Normally Open limit (reed) switches (sold separately). Mount the switches so that the Open Limit switch is closed only when the door is fully open. The Close Limit switch should be closed only when the door is fully closed. ratgdo will be able to tell if the door is open, opening, closing or closed. Once calibrated, the ESP Home firmware will also be able to calculate the % position of the door and allow you to open the door a specific amount.

Gate Opener Wiring (Dry Contact)

Most gate openers use dry contact control. Liftmaster Gate Openers require an expansion board to provide the necessary interface terminals. Below is an example of an expansion board (model K1D8387-1CC) on an LA400 Gate Opener. Special thanks to Matt Z for providing the photos and diagram.

On this installation, a custom option was made to enable "party mode" which keeps the gate open when activated. For this use case, the status obstruction terminal was re-purposed to activate the LA400's reset switch which enables party mode. The customized yaml that was used to achieve this can be found here.