Motion detector instead of switch?

My friendly electrician forgot to connect a switch in the bathroom :rolleyes: and suggests installing a motion sensor.

It turns the light on automatically when you enter the (small) room. So far so good. But what about turning it off? What I would like is for it not to turn off as long as someone is in the room, but soon after they have left. The latter is probably controlled by the timer setting. I would find it annoying if it always turned off after, for example, 5 minutes (set time) and you have to wave around to make it turn on again (I had that once with an outdoor light). There are different systems that detect "motion": Infrared Microwave Photo cell Does anyone know exactly what I should pay attention to when buying the device?

Impulse relay can be retrofitted without the path of the motion detector or presence detector.

Yes, there is, presence detector is the keyword. can advise you comprehensively here, I think.

We decided against using that feature again in the new house. In the previous house, we had a motion detector in the hallway. Overall, it was of course a practical thing - no matter which room you came out of, the light turned on. But in detail, it can have such annoying disadvantages that we won't do it again. For us, for example, it was the care of the toddler at night. The child wakes up and needs something. You get up half asleep in the middle of the night and walk over. The light turned on automatically, so you don’t think about it with your sleepy head. You go into the child’s room and take care of the kid—but you don’t turn on an additional light there because you don’t want to make the child unnecessarily "wide awake" and prefer to stay in dim light.
The problem is that the motion or presence detector in the hallway no longer detects anyone and goes off after a short time. Then you’re standing in the child’s room, possibly with a half wiped bottom, calling out at 4 a.m. for the other parent because you can’t leave the child unattended on the changing table to jump around in the hallway for the motion detector. :D
This is a special case, but you have to be aware—as soon as you want to “passively” use the light for another room, the motion and presence detectors fail you. You really have to remember every time to switch the control to “permanent lighting” and then switch it back when you return. That’s easily forgotten too, and then the light is on half the night.
Furthermore, I found it annoying that the device made a relatively loud CLICK sound when you came out of a room and the light turned on. If I have to get up at night, I can operate a classic light switch nearly silently. That CLICK has often woken up our (admittedly sensitive) child.

Our motion detector is silent. The disadvantage is simply that if the detector registers nothing, the light goes off. Annoying in the shower or on the toilet. In the hallway repeatedly, in the bathroom I don’t want one.

Motion detector only for a night light in the bathroom.

Otherwise, set the time to at least 10 minutes.