Whereas the motion sensor is handy for those in the van to check the ghost’s location, the infrared light sensor lets those already in the house know where the ghost might be.

Why Your Smartphone Needs an Infrared Sensor You could use a heat sensor to check your house for leaks, for instance. But mostly, it's a lot of fun.

P4562D -- Jul 24 2023 -- TMOS sensor_IMAGE HI RES ST TMOS sensor STMicroelectronics reveals innovative infrared (IR) sensor for presence and motion detection in building automation Highly ...