The motion sensor switch circuit can automatically turn on a water sprinkler but you can easily use it as a motion sensor light switch or motion activated alarm too. Before beginning the construction ...

This motion detector alarm can detect a moving person from a distance of 1 meter. It uses a dual IR Transmitter-Receiver module HOA1405. When the sensor detects the reflected IR rays, alarm will sound ...

Motion sensors are pretty useful — but they’re just so darn ugly! Well — if you’re a Whovian — maybe this hack is for you. A 3D printed TARDIS Motion Sensor Alarm! As it turns out, it was as simple as ...

Jon Porter is a reporter with five years of experience covering consumer tech releases, EU tech policy, online platforms, and mechanical keyboards. Smart home security company Abode is releasing an ...

The sound of car alarms going off at the touch are common enough. How do these car protection systems detect intrusion? In a car alarm system, a siren is connected to a few sensors to ensure that as ...

We may earn a commission from links on this page. One of the most common first sensors people buy for their home is a motion sensor. But in almost all cases, you want a presence sensor instead. The ...