Dual Channel Quad Element PIR with Microwave Detection...
£39.66
Movement Detectors
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Activ8 DT-AM PIR
Dual Channel Quad Element PIR with Microwave Detection & Anti-mask Technology...
£47.68
Movement Detectors
There are 3 main types of movement detectors; Passive Infra-Red detectors are suitable for most internal applications, quad detectors also work on IR but are more difficult to trigger while dual techs use IR as well as microwave radiation to trigger.