I got the Linear GD00Z-4 working with my LiftMaster chain-drive opener which is officially unsupported by the GD00Z-4. Here's how:
My garage door opener has a wall-mount controller that shows time, temperature, light status and has a button to open/close the door. These models use some proprietary signaling to send an open/close command across the two wires to the opener. Simply closing this circuit does not send an open/close command which prevents the GD00Z-4 from working.
In my case, I had been using an Insteon momentary switch for many years by soldering into two points on the back of the PCB where the push-button connects. By doing this, the momentary output of the Insteon controller simulated me physically pushing the button on the console.
This all worked great until I tried to install the GD00Z-4... I thought it would just work but there's something about the GD00Z-4 that prevents the momentary closure from working.
The solution turned out to be a standard SPST 12v automotive relay and a 12v "wall wart" power supply. The GD00Z-4 just needs a middle man relay for some reason. I'm not sure what's going on inside the GD00Z-4 but this seems to work.
I'm not going to get into wiring schematics here unless someone asks. Just wanted to post up that it can be made to work.
My garage door opener has a wall-mount controller that shows time, temperature, light status and has a button to open/close the door. These models use some proprietary signaling to send an open/close command across the two wires to the opener. Simply closing this circuit does not send an open/close command which prevents the GD00Z-4 from working.
In my case, I had been using an Insteon momentary switch for many years by soldering into two points on the back of the PCB where the push-button connects. By doing this, the momentary output of the Insteon controller simulated me physically pushing the button on the console.
This all worked great until I tried to install the GD00Z-4... I thought it would just work but there's something about the GD00Z-4 that prevents the momentary closure from working.
The solution turned out to be a standard SPST 12v automotive relay and a 12v "wall wart" power supply. The GD00Z-4 just needs a middle man relay for some reason. I'm not sure what's going on inside the GD00Z-4 but this seems to work.
I'm not going to get into wiring schematics here unless someone asks. Just wanted to post up that it can be made to work.
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