I am currently using 4 fibaro multi-sensors (see: https://www.fibaro.com/en/products/motion-sensor/), but I am thinking about replacing them.
Issues I am having:
- sometimes I get false triggers, even though the sensor is pointed into a direction where there is no movement/window/heater/mirror/whatsoever. E.g. entering the room will trigger it, but even after leaving the room, I will get multiple triggers afterwards. I had similar issues with the other sensors when experimenting with the sensitivy. I had to factory-reset some of the multiple times to get rid of “always-on” issues.
- the sensor seems to trigger slowly (1-2s delay), which is an issue when it shall serve the purpose of activating lights when entering a room / passing through a room. I already set “pulse counters” to 1, resulting in a better reaction time, however its still around 1s.
- the “blind time” is too long, e.g. going back and forth between rooms does not trigger lights in each corresponding room, but instead leaves you in the dark when you’re still within the “blind time” of the sensor. I was only able to reduce this value for 1 sensor where it now works, but no matter how often I try to set this parameter for the other sensors via homeassistant, the blind time remains the same.
So all in all, the sensors only work semi-reliable. I am wondering if other sensors will behave the same, or if there is any better products out there?
Ok I’d like to share my latest experience with the variety of motion sensors I have tried so far.
Fibaro FGMS-001 4 in 1 Sensor (Z-Wave)
pro has sensor for movement, temperature and light (and tampering, if that matters)
pro LED can be disabled
pro has lots of settings regarding sensitivity and data transfers which can be set via Z-wave
pro blind time can be set to a really short interval. I have set 2 of mine to as low as 2 seconds, which in almost any situation makes them trigger when they should trigger
con sometimes I get false positives and I fail to track down the issue
con 2 out of 4 sensors go crazy after some days/weeks (e.g. the repeatedly report motion although there is none). I’ve sent them back to the shop waiting for replacement/repair
con expensive (44€)
con even after
TOOGOO® PIR 433MHz sensor via Sonoff bridge
pro really cheap (6€)
pro virtually no setup whatsoever (just sends and events come in via MQTT)
con fails to reliably detect motion
con detection comes with a delay of 2-4s which renders it completely useless (I’ll have the room crossed within 4s and thus I’ll be left in the dark)
con it was shipped from china, took a month to arrive, and I cannot send it back (normally in germany you can send back stuff within 2 weeks without reason and get your money back)
Sonoff PIR2 PIR Sensor 433Mhz via Sonoff bridge
Essentially the same as the before mentioned sensor (-> useless)
Also shipped from china.
Philips Hue motion sensor (Zigbee)
pro small and handy
pro detects motion pretty fast, basically instant (wow!)
pro detects motion, temperature and light
neutral price okay (35€)
neutral blind time is 10s, and there seems to be no way of changing it
OSRAM Smart+ ZigBee motion sensor
pro even smaller than the philips one
pro detects motion and temperature
neutral detection time is mediocre (1-2s)
neutral price okay (33€)
con LED doesnt seem to have an option to turn off
con blind time is a hefty 35 seconds (!), which renders it useless for me
I am torn between the fibaro and the philips sensor. I’m really impressed by the low latency of the philips one, while I love that fibaro can have a really low blind time. When putting sensors in every room and attach lights to it, a higher blind time leads to your lights remaining off when you go back and forth between rooms.
This might be my special situation, because I turn lights off once motion is detected elsewhere (and not when motion is no longer detected, which will most of the time turn off in wrong situations, because sensors rarely cover my entire rooms).
Thus, low blind time is crucial for me, same as quick detection. I will definitely keep the philips one for my hallway, because there, actually, I turn lights off after a delay of 60s or something, so blind time is not an issue.
I have not yet tried any of the various other sensors like Xiaomi, Aeotec etc, but it would be nice, if other people would add to this thread their experience with other products.
Relevant details would be:
- detection time/latency
- blind time (time until sensor can detect motion again)
- LED can be disabled?
- technology/setup (Z-Wave, Zigbee, Wifi, …)