Hello everyone,
I need help about a product. I found it on ceiling and I don't know what it is. Can you please help? (Picture below)

 

Hello,

It is likely not a spycam.
To me it looks like a distance sensor.
It could be used to detect if there is someone in the room.

Bertus

 

First guess is an IR transmitter or receiver. Can you show the other side, and what the wires lead to?

 

Do the lights turn on when you walk into the room?

 

Hello,

It is likely not a spycam.
To me it looks like a distance sensor.
It could be used to detect if there is someone in the room.

Bertus

Hi Bertus,
Thank you for your fast reply. Do you have any idea why someone put something like this on bathroom's ceiling? Can it trigger to start any other device?

 

Hello,

It can be used to start a device.
Think of a timer for some fans, heater or lights.

Bertus

 

First guess is an IR transmitter or receiver. Can you show the other side, and what the wires lead to?

Hi,
I can't show the otherside. Cables go into ceiling through a tight hole.

 

If you want to know what it does, follow the wires and send pictures of what they lead to. Do you have attic access?

 

An occupancy sensor is usually used to turn lights or fan on/off by knowing when someone is there or not. Chase the wires. Use a tone-generator (inductive) to trace them.

 

Hmmm ... the clue could be the black dome thing , looks like an IR detector ...

This is what a modern fire detector looks like ...

The small black thing detects infra red in flames , the one you have is older and bigger ...

Put a flame close to it and it will probably beep loudly

 

Here's the same sensor that you have in your picture ...

An IR sensor used to detect flames , (not movement they are white and bigger) . Although it could perhaps be an occupancy sensor , humans emit IR ...

 

Hmmm ... the clue could be the black dome thing , looks like an IR detector ...

This is what a modern fire detector looks like ...

The small black thing detects infra red in flames , the one you have is older and bigger ...

Put a flame close to it and it will probably beep loudly

Hi,
What you wrote makes sense. 15cm away from this device, there is a speaker embedded into the ceiling but unfortunately I can not test the device as you said. Thank you and all other participants for helping me.

 

Ah ,,, just noticed this is in a bathroom ceiling ... almost certainly a human detector to switch on extraction fan ... probably what you think is a speaker is the grill and fan for extracting air.

 

IR receiver on top (the dark one) and either an IR transmitter (the clear one) or phototransistor/diode or LED on the bottom. Most likely a transmitter which means motion instead of heat detector?