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Home > ZEN16 MultiRelay > ZEN16 Z-Wave Questions > ZEN16 & SmartThings > How to Use the ZEN16 MultiRelay as a Garage Door Opener on SmartThings
How to Use the ZEN16 MultiRelay as a Garage Door Opener on SmartThings
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You can automate your standard garage door with the MultiRelay following the steps below. Remember to check your local safety regulations first and make sure you test the device thoroughly after programming it to prevent accidental operation. The ZEN16 MultiRelay is NOT a reliable solution to track the open/close status of your garage door. You will need to install a Z-Wave contact or tilt sensor on the garage door to track its position. It's recommended to always sound an audible alarm (like a loud siren) whenever the doors are being opened or closed remotely.

Here are detailed instructions on how to accomplish an easy and affordable DIY Z-Wave garage door opener solution with the ZEN16 MultiRelay:



The device will work great with simple momentary garage door wall switches. If your garage door opener uses a proprietary wireless control system, you will NOT be able to use the ZEN16 MultiRelay (or any other Z-Wave device) to control the opener.

If you have a simple one-button garage door switch, just use the below diagram to wire the MultiRelay next to it (you can wire up to 3 door switches to a single MultiRelay):

  • WIRING TIPS: Always take "before" pictures just in case you need to restore the original set-up or send us images for consultation. use the correct screwdriver size for the terminal screws on your MultiRelay and wall switches (if connecting them). Use appropriate electrical tools when cutting, prepping, and stripping electrical wires. If you don’t have the necessary tools to perform the installation or are not sure which tools to use or how, please hire an electrician to complete the installation for you. Follow the National Electrical Code and your local safety regulations when performing the installation, including (but not limited to), choosing the correct gauge of jumper wires. The recommended gauge for 15 Amp circuits is 14 AWG and 12 AWG for 20 Amp circuits.
  • POWER OFF: turn the circuit power off in the breaker panel before you start. Keep the MultiRelay unplugged from its power source.
  • DISCONNECT THE SWITCH: Open the switch cover and disconnect the 2 wires coming to it from the opener.
  • CONNECT THE MULTIRELAY: Connect the 2 wires coming from the opener to the R1 terminals on the MultiRelay and run 2 jumper wires between the wall switch screws and Sw1 terminals on the MultiRelay as shown in the below diagram.



If you have a wall switch with a light button on it as well and would like to continue using it to turn the light on, please use the below diagram instead (only for use with this particular type of wall switch):



  • RESTORE POWER: Connect the opener and ZEN16 MultiRelay back to their power source. Click here for the recommended power supply to power the MultiRelay ZEN16. Please do NOT use laptop chargers or Apple accessories with the MultiRelay. NEVER connect DC power and USB power to the ZEN16 at the same time.



  • Z-WAVE OPEN/CLOSE SENSOR: We recommend using a tilt sensor to reliably track the status of your sectional garage door but you can also use any Z-Wave contact sensor for that purpose. You will need an open/close sensor to use the dedicated Garage Door Opener SmartApp we talk about below.
  • Z-WAVE SIREN: We recommend using a Z-Wave siren to sound an alarm whenever the door is being opened or closed remotely for added safety. You can use any Z-Wave siren for that purpose.



  1. Install a custom device handler for the MultiRelay before adding it to SmartThings. Click here for detailed instructions.
  2. Install a special custom device handler for a virtual Garage Door device that you'll use to open and close the garage door from your SmartThings hub (it's not the same handler as your ZEN16 device handler so please make sure you install the below handler before proceeding):
    • Stay in the IDE portal (where you just added the handler for your ZEN16) or if you already left (or had to take a break), log in here with the same information you use for your SmartThings app.
    • Click on My Device Handlers in the top menu.
    • In the top right corner, click on "Create new device handler" and choose "from code" from the top tab menu. You'll be presented with a blank area where you can paste the code from the following link. Please click on this link to access the code for the handler, then copy ALL of the code from the page.
    • Next, scroll to the bottom and click Create.
    • Now click Save, then click Publish > For Me.
    • If you'd like to control your garage door using your Amazon Echo smart speaker, you can also install the handler from this link to set this integration up. Follow the steps above to install the handler. This is optional and only for users who'd like to add voice control through Alexa to their solution.
  3. Install a special SmartApp to program your garage door set-up in SmartThings:
    • Stay in the IDE portal.
    • Click on My SmartApps in the top menu.
    • In the top right corner, click on "+New SmartApp" and choose "from code" from the top tab menu. You'll be presented with a blank area where you can paste the code from the following link. Please click on this link to access the code for the handler, then copy ALL of the code from the page.
    • Next, scroll to the bottom and click Create.
    • Now click Save, then click Publish > For Me.
  4. Add the MultiRelay to SmartThings according to the instructions here.
  5. Do NOT change any of the advanced setting from the MultiRelay (even the switch input type).
  6. Program your garage door in the SmartApp:
    • Add the SmartApp:
      • Go to Automations in your SmartThings app > tap the + button in the top right corner > tap Add Routine > tap Discover (the tab at the bottom of the screen) and scroll all the way down to your custom SmartApps, then select Zooz Garage Door Opener.
    • The app will open automatically but if it doesn't, you can find it on the list of your SmartApps.
    • Select the button that says "Tap to Add a Garage Door".
    • Add a name to the new garage door to identify it in the SmartApp as well as in your general SmartThings app (it will use this name to create a new virtual garage door device).
    • Tap on Select Relay Switch to choose the Relay (the child relay device, so R1, R2, or R3, rather than the master ZEN16 MultiRelay) connected to your garage door.
    • Tap on Select Open/Close Sensor to choose the Z-Wave sensor installed on the garage door you'd like to automate (this sensor is required to use the app because it's the only way to reliably monitor the actual open/close status of your garage door).
    • Go through the other options in the app to make sure the pre-filled settings match your installation. We recommend leaving the auto-off timer at the default 2 seconds here (but if you already set the timer directly in the advanced settings for the ZEN16 on firmware 1.01 or 1.02, you'll need to change the default 2 second setting to disabled in the SmartApp). Operation Duration is set to 15 seconds which is the typical time it takes for a door to fully open or close but if your set-up is different, you can change it to the actual duration.
    • Tap Save / Done.
    • The set-up will now appear on the list of garage doors in your SmartApp, you can edit it or remove it anytime. IMPORTANT: Before exiting the screen, you need to tap Save / Done again for the app to create a new garage door device in your general app.
  7. Control your garage door from SmartThings:
    • Go back to your devices in the SmartThings app and locate the new new garage door device by the same name you entered in the SmartApp. 
    • Tap on the device to open or close the garage door and monitor its status. The open/close status is displayed based on the reports from your Z-Wave sensor.
    • Tap the round button under Garage control to open or close the door from the app. It will change the status to opening or closing for 15 seconds (or your custom duration) before the device updates to the new open / close status.
    • Use the garage door device (rather than the ZEN16 MultiRelay) in any automations, rules, scenes, or schedules programmed in your hub.
  8. Program your Z-Wave siren:
    • If you'd like to sound a siren when the garage door is opening or closing (recommended), please add the Z-Wave siren to your hub first according to the manufacturer instructions.
    • Once the siren is added and you can trigger it from your app, set an automation to sound the siren whenever the device status of your new garage door device is opening or closing.
    • You can set 4 separate automations by tapping "+" in the home screen and selecting Automation. Then tap the "+" button and select "Device status" as the "If" trigger and choose your garage door device from the device list and select Door control > Closing > Save. Tap Next and tap on the "+" button to choose Control devices the "Then" action and select your Z-Wave siren from the device list. Tap it again to set its status to ON and tap Done. Rename your automation if needed and tap OK. Do the same for the Opening status so the siren triggers both when the door is opening and closing. Then program 2 more automations, setting Open and Close as the Trigger and setting the siren to OFF in the Action part to turn it off once the door is fully open or closed.


Once everything is programmed, test it a couple of times to make sure the set-up is fully functional and enjoy your new smart garage door!


If you need help with your set-up, please reach out to us for assistance. Always include your order number and indicate which hub you're using for faster service. Your order number can be from The Smartest House, Amazon, or if - please send us a screenshot of the order confirmation. This information helps us verify your device model to send the correct firmware file.

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