Always unplug your opener from the wall before wiring!
Dry Contact wiring applies to Genie, Linear, and Chamberlain (Red or Purple button) configurations that don't use Security+ protocols.
ratgdo32 & ratgdo32 disco
Connect the ratgdo's Red wire to your door opener's positive (+) wall control terminal and the White wire to the negative (-) wall control terminal.
Sensing Door Position
In order for ratgdo to know where the door is, an external sensor is needed. The ratgdo encoder is used to detect the exact position and direction of travel of your door.
The encoder's 3-wire harness connects to 3 of the 6 wires on the ratgdo auxiliary harness: Black to (G) Ground, Red to (TC) Trigger Close, and White to (TO) Trigger Open.
Alternatively, limit switches can be used to detect when the door is at its travel limits, but direction of travel and exact position are estimated.
Genie Colored Terminal Blocks
Modern Genie openers have a colored terminal block instead of screw terminals. The mapping is as follows:
- Orange Terminal - ratgdo B (black Obs +)
- White Terminal - ratgdo W (white G -)
- Black Terminal - ratgdo R (red Ctrl +)
Commercial Opener Wiring
Some commercial door openers have specific discrete terminals for Open and Close instead of a single button control (SBC) terminal which allows for a toggle.
If your opener does not have a SBC terminal that will toggle the door, follow the Optional Wiring for Openers with Discrete (3 button) Controls in the diagram above.
Gate Opener Wiring Examples (LA400)
Unfortunately there are far too many varieties of gate openers to properly document the specifics for them all, however the principle is always the same. Find the dry contact control terminal on your gate opener's control board that causes the gate to open/close when momentarily bridged to ground/common. This terminal connects to ratgdo's red control wire, while the white wire connects to ground/common. Limit switches are necessary to tell ratgdo what the gates position is.
