How to Add Your ZSE11 Q Sensor to Home Assistant

The ZSE11 Q Sensor is officially integrated with the JS integration of Home Assistant!

If you aren't on the JS integration yet, Home Assistant currently recommends handling Z-Wave devices through the new Z-Wave JS integration since all others have essentially been abandoned and / or discontinued.

Once you're ready to pair the ZSE11 to your network, follow the steps below:

Power the sensor: Insert the batteries or the USB cable. The LED indicator will start blinking. The sensor can only be powered by a single power source. If it's powered by both USB and battery, it may damage it and it could not work on battery reliably afterwards.
Place the sensor near its final installation location
In Home Assistant: open Configuration > Integrations > Z-Wave JS > Configure
Click on Add node
Click on Start Inclusion to initiate pairing
Click the Z-Wave button 3 times as quickly as possible
The LED indicator will start blinking to confirm inclusion mode and turn off once inclusion is completed. You should then see the sensor on your device list

The sensor will automatically pair as a repeater if connected to USB power, no special button sequence required. NEVER include the sensor powered with USB and then switch over to batteries. Your hub will recognize the sensor as a Z-Wave repeater and the batteries will drain quickly. Always include the sensor powered by batteries only if you’re planning to use it as a battery device. Don't use batteries and USB together.

If your sensor is having difficulties being recognized by Home Assistant, you should try to exclude it from the system first. The process acts as a soft reset to help the hub recognize and include the device:

In Home Assistant: open Configuration > Integrations > Z-Wave JS > Configure.
Click on Remove Node.
Click on Start Exclusion.
Click the Z-Wave button 3 times as quickly as possible (the LED indicator will start flashing).
Home Assistant will confirm that the device was removed and you should now be able to add it to your system.

For the 500 & 700 series ZSE11: You may need to change Parameter 16 to Value 0 (Size 1 byte dec) so that motion detection is recognized by Home Assistant since the sensor sends a binary sensor report for motion, and JS expects a notification type. You can now change any parameter manually on the JS Z-Wave integration for Home Assistant.

For the 800 series ZSE11: The Binary Sensor Command Class is obsolete, so there will be no Parameter 16 and motion should be detected without adjusting any parameters. Now all 800 series sensors are using the Notification Command Class - home security type.

It needs to be done in zwavejs2mqtt and it’s not possible to do this within HA directly at the moment. Under node, scroll down below any exposed settings for the device (under Configuration) to the Custom Configuration section as shown in the screenshot here, where you'll see Value, Parameter and Size. You can enter the data according to the product documentation and click SET for the parameter to be updated.
If you have a battery-powered device, you'll need to wake it up by performing the same activation sequence as during inclusion.