Zooz 700 Series Z-Wave Long Range Smart Relay ZEN51 | Installs Behind Wall Switch Or at The Light | Compatible with SmartThings, Hubitat, and Home Assistant | Z-Wave Hub Required (Sold Separately)

I installed this Mar/2025 smart home device using the SmartThings hub v2. I have nine smoke detectors in my house.On the first link, I pressed the button three times to connect the device to my hub. However, I encountered an issue because the hub connected but didn’t function correctly. After researching, I discovered that I needed to install the Zooz driver first on my hub.When I attempted to update the driver in the hub, I couldn’t switch to the newly installed Zooz driver. Consequently, I had to put the device in exclusion mode and remove it from the hub. Next, I re-added the Zooz relay, and the device connected immediately with the correct driver.The relay produces no noise and fits perfectly in a 1-gang box, even though the box contains three Romex wires.

I installed this inside a metal junction box to control a light at the bottom of the basement stairs. Previously this had been controlled by a standard motion sensor with timer switch at the top of the stairs, but I wanted another motion sensor elsewhere in the basement so the light would stay on while someone was down there. I paired this with two Zooz "Q" motion sensors, all programmed through a Universal Devices EISY hub.I was initially skeptical that the relay would get the Z-wave signal inside the steel electrical box, but it does so reliably.

This was relatively easy to install, but I had trouble pairing it. Support answered my question very quickly. I needed to push the button faster to get to pairing mode. Once I got through that, the switch works great. It is nice that Zooz has custom edge drivers for using this on Smartthings.

Been using Zooz products since I started the task of automating my home, the light automation is always a good starting point. I wanted to maintain my current “dumb” switches and found this option. The pair is easy and works with home assistant (You need a zwave hub) It seems to be reliable. I’m happy with this product.The only observation is that you’ll need to change an option for the external switch “toggle” the light instead of fixed actions, and in my case there is another option that add a delay to detect multiple clicks, I hate that delay, but is configurable.

I recently changed all my lights to ZWave to reduce the WiFi pollution in my home. I needed a ZWave module to use as a trigger for an automation when my Vista20P alarm is tripped. This is not a direct interface but I was able to use a small relay module between the alarm and the zwave module. It works great and has been very reliable. Now when my alarm system is tripped all my lights are turned ON.Instead of having a terminal block with screws, the Zooz modules have short wire pigtails that you must solder to. This is a little unhandled but not a big deal if you have the tools and skill set.Update: After only a few months of service the switch input has failed. It’s still connected and controllable by SmartThings or by the button on the module but nothing happens when the external switch (relay) is closed. I’ve checked it thoroughly and the failure is internal to the Zooz module. This may be indicative of a deficiency in the module design but for now I’m going to attribute it to infant mortality and buy another one. I’ll update again if I have another failure.Update: The new unit stopped working. I noticed it on 3-19-2023. I did some testing and found that the module was connected to the hub and could be controlled by the SmartThings app and by the button but not by the external switch input. I was about to remove the module and install a new one when I remembered that I had a quick power failure recently. With this in mind I cycled the utility power to that circuit and that restored normal operation. It’s good that I didn’t have to remove the module and wire in a new one but troubling that a utility brownout can cause the external switch input to become unusable. Now if I want this function to be reliable when I’m away from home, I’ll have to create a way to cycle utility power to this circuit remotely. Good to know the answer but…

Works great with Home Assistant