Hotel Management penny pinching with aircon motion sensors

[Spacetravel]

Would be good to know what these sensors look like.

I’ve googled and can find impressive glossy brochures from the companies selling these systems, but they all carefully omit pictures of the sensor.

I guess it’s too late once you check in, but handy to know what we’re looking for.

Pics appreciated.

At the hilton garden inn sg the sensor looks like a security motion sensor. Rectangle with a matt screen on the front angled towards the centre of the room. At Hilton orchard road Singapore, it was more discreet, I want to say it was like a small circular thing in the ceiling but I could be wrong. I will be in Singapore again soon enough, if I decide to give one of these hotels another go I will post pictures.