I have a battery-operated PIR+mmWave presence sensor. It seems it takes forever to go to back to inactive. I have the "Presence Keep Time" set short to 30 seconds. The only time I ever see this "timer" taking into effect is when I walk in and immediately walk out of the room. Otherwise, if I do things in the room and then leave, it takes a really long time before it goes back to "Inactive".
I'm not quite sure what is trigger the "false positive" to keep the "small motion" alive. We are all downstairs during this test. The sensor is located upstairs in a room on the far end of the house. No fans in the room.
Any ideas on what I need to change to improve this?
Nothing really jumps out... apart from the static detection distance of 5m ... is this accurate measurement from your sensor to the end of your bathroom ?
I just find it odd that the "presence timer" when I walk-in and immediately out of the room actually follows the "Presence keep time", but when I do things in the room, it doesn't.
Here's me going in and out of the room immediately:
But, if I do things in the room for a bit and sit in the tub for a few minutes, then leave, the "Presence keep time" is almost indefinite. It took such a long time, my husband eventually retriggered sensor -sigh-:
The 9:22 AM is my husband retriggering it. But, I would have expected it to go back to Inactive around 9 AM anyway... I want to blame the lux changes, but there's quite a considerable amount of time between them that it SHOULD have went Inactive in between (8:59 & 9:18).
Right. But no one was upstairs when it was doing that odd behavior. We were all downstairs on a work call. It wasn't until 9:22 that my husband triggered it. It should have became Inactive way before then.
I get that, but these sensors are very sensitive and see see through walls as well.
I have another radar sensor in my bathroom and due to fixed minimum distance on this radar (from 3m to 6m), this sensor always pickups activity from my neighbour. My bathroom is about 2m if I recall.
It can go through 2 walls and subfloor with metal vents? That's crazy haha. It may be the sensitivity. I recall complaining about this before and looking at a comment I did, it seems to have fixed it when I changed the sensitivity from 8 to 6. Maybe it was in fact catching minimal lux changes. This is at 7 currently, so I'll try lowering that as much as I can while still being able to detect sitting in the tub. Testing the distance at 4m right now.
Edit: As I am sitting here, it is totally possible it’s grabbing the shadows of the leaves through the window but doesn’t explain why going in and immediately out of the room works fine. I would have expected it to keep that active for that too.
I dropped down the distance but that made it so it wouldn’t detect me sitting in the tub anymore. When I stand up from the tub, I’ll see a “moving” motion so I think the distance is fine. I increased the sensitivity to 8. That made it so it detected “small” motion in the tub. But, now I’m back to the same issue of it being stuck in “small” motion indefinitely.
Okay. The sweet spot seems to be 5m distance (it’s actually not 5m), but changed the sensitivity to 6. I’m guessing 7 was too sensitive and picking up subtle movements from the outside and shadows made by swaying leaves going through the window and skylight.
I’ll have to test during different times of the day.
Thanks, that has always been a concern is driver support for local vs. cloud. Every one of the sensors I have been looking at requires the vendor's app to install and configure which is something I rather avoid.
Not sure! But decreasing the sensitivity to 6 seems to work when laying in the tub and then when I leave, it goes to inactive 30 seconds after. I had to leave the distance to 5 m tho
just a user driver here
