Motion sensors are designed for indoor use and can be mounted flat against a wall or in a corner of a room. The Passive Infrared (PIR) movement sensor can detect movement of body heat within a fan-shaped area up to 12 meters in radius. Pet-tolerant versions are available.
Combining PIR with K-band microwave technology, Dual Technology detectors are recommended for areas with fluctuating temperatures such as in warehouses, sheds or garages. As well as in areas at risk of being struck by direct sunlight such as in conservatories; and in rooms with repetitive movements, such as from ceiling fans