This is an FYI for others purchasing the Qolsys QS1231-840 for this original poster’s question/purpose and some other points in general.
I recently also purchased 3 Qolsys QS1231-840’s for this reason but the Qolsys QS1231-840 Motion sensor is CLEARLY NOT optimal for this function/use.
After sensing motion this motion sensor sends a signal to the Panel then goes into a 5 minute countdown and a 4 second time out delay. THEN, if a second motion is detected after the 4 second delay and before the 5 minute countdown, it sends a signal to the Panel but then GOES TO SLEEP for 5 minutes in order to save battery.
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So if you have this in a room/space to turn on a light that you might go into and out of a few times (because you need something else or forgot something – e.g. outside garage fridge), this will turn on the light the first time but not again for another 5 minutes. That is annoying.
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I don’t find this motion sensor to be very sensitive in comparison to my WIRED Bosch PIR detectors. I can enter a room, move around, wave my arms, and exit without the Qolsys Sensor activating. Of the 3 units I have, not a single one is very sensitive (I can stick my hand around a corner and the Bosch picks it up). That led me to discover #3 below (as I did put two units at the edge of a “shelf” not precisely at 7.5 ft height and the other 1 is on the wall but not precisely at 7.5 ft height)
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It is somewhat funny that I’ve seen an ad video and I’ve see an ad picture displaying the Motion Sensor on a shelf and the video shows turning on a light given my experience in #1 and #2 above.
BECAUSE, it turns out the Instructions say DO NOT: Set the sensor on a shelf. DO NOT: Mount at any other height than 7.5 ft. However, this limits placement of the Motion Sensor and may not be optimal in where you want the motion sensor to be aimed at to sense motion to turn on a light or avoid putting holes in the walls. https://qolsys.com/wp-content/uploads/2019/01/IQ-Motion-S-Installation-Manual-QS1231-840.pdf (See page 1 on the bottom right).
And the Qoslys webpage then incorrectly even says “Pet immune up to 40 pounds, the IQ Motion-S is designed to mount on a flat surface or in a corner.” IQ MOTION-S – QOLSYS
- There is no option to turn off the Pet Friendly setting in case that could possibly increase the motion sensor sensitivity.
Thus, if you are planning on purchasing the Qolsys QS1231-840 to use as a motion detector for turning on/off devices (especially more than once in a 5 minute period), I would recommend AGAINST this Motion Sensor.
Similar to this poster, Qolsys Panel 2 Plus with DSC PG9904P?, I agree this Motion Sensor leaves A LOT to be desired. (I had one unit set off the Alarm while I was out. I disarmed the system from my phone, rearmed it, and then 5 minutes later it “sensed motion” and again set off the Alarm. This was in a hallway with NO motion, no vent, etc. I have since switched the setting option for all of these to Qolsys Security Sensor “25 - Safety Motion” setting so it doesn’t set off the Alarm when I may NOT have my phone with me to receive notification and to be able to disarm the Panel).
The above is just commentary on the Qolsys QS1231-840 motion sensor.
I am VERY happy with the Qolsys IQ Panel 4.