Overview of pyroelectric  motion sensor

BS412 is a newest smart digital motion detector with a small window size. It offers a complete motion detector solution, with all electronic circuitry built into the detector housing. Only a power supply and power-switching components need to be added to make the entire motion switch.

BS412 includes the time setting only.

Features of pyroelectric ir detector

Built-in filter, screen the interference by other frequency

Excellent power supply rejection, Insensitive to RF interference

Applications of pyroelectronic infrared sensor   

home security systems

As its ability to sense warm, moving objects such as people walking into a room is coupled with simplicity and cost effectiveness.

FAQ

1.Can PIR sensor detect cars?

PIR-based Motion Detection: In this case motion is detected by means of a PIR sensor, a passive infrared sensor. This sensor detects emitted infrared energy from objects (humans and animals, but also cars) in the form of heat.

2.Do PIR sensors work in the dark?

Yes, motion sensors work in the dark. The way that a motion sensor detects movement has nothing to do with how light or dark it is in the immediate area. ... Since infrared energy is present and can be detected regardless of the amount of light in the environment, a PIR motion sensor will work just fine in the dark.