AS312 PIR Sensor

This little sensor picks up movement from a surprisingly wide angle despite its compact housing. I have it running off a simple 5V supply and it's been detecting reliably every time someone walks into the room.

Took me maybe five minutes to wire it up because everything’s already enclosed in the housing—no fiddly external parts to lose. The detection’s been spot-on in my hallway, and the small window still catches movement from a good angle.

The tiny window size is perfect for my tight hallway installation, and it picks up movement reliably every time. Just needed to connect power and it was working instantly.