Alan Barker Posted March 9, 2022 Report Posted March 9, 2022 Has anyone determined which wireless frequencies are most/least likely to suffer from occupancy sensor interference? The Leviton sensors operate at 5.8 GHz but I have run into what sounds like intermodulation problems in UHF. Quote
Matthew Steel Posted March 16, 2022 Report Posted March 16, 2022 The problems I have heard about with occupancy sensors don't involve RF. Rather some use ultrasonic signals as the detection mechanism. These signals, though inaudible, can be quite strong and can be picked up by a microphone. In certain transmitters, the low pass filtering on the input is not sufficient to prevent the ultrasonic signal from having an effect on the compander stage. This creates artifacts that show up in the audible frequencies. Quote
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