Problem controling my Lift Master 8500

[suXor (Chris Pickering)]

Linear GD00Z (Garage Controller) and Wall Switch (with Motion Detector)

I was able to get full functionality with the Linear GD00Z controller and a Smart LCD wall controller. It did take custom integration work. Installation Overview Instead of trying to trigger the opener directly, we’ll use the Linear GD00Z to close a relay which will close the button contacts on our smart controller and thus open our door. Materials and Supplies 4 wires (instead of the standard 2) from the opener to the smart controller. Alternatively you can mount the Linear GD00Z on the wall next to your smart controller. I used 18/5 thermostat wire. A 12-volt automotive relay. The Linear GD00Z doesn’t produce enough voltage to trigger the smart controller. It will however close a relay. An additional 12-volt DC power supply. I had an extra lying around from an old wireless router. St…