Description and operation – CP Electronics MWS3A-PRM-L3 User Manual
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The MWS3A-PRM-L3 (microwave) detector provides automatic control of lighting loads with optional
manual control. It can be used on incandescent, fluorescent and compact fluorescent lighting, and has the
added benefit of being able to connect an external switch. The MWS3A-PRM-L3 detects movement using
a highly sensitive microwave detector. This works by emitting low power microwave signals and measuring
the reflections as the signals bounce off moving objects. The MWS3A-PRM-L3 has a unique adjustable
sensor head that allows the area of detection to be optimised for the application.
When movement is detected the load will automatically turn on. When the area is no longer occupied the
load will automatically switch off after an adjustable time period. An integral adjustable photocell allows the
lights to be kept off if there is sufficient ambient light.
An integral infra-red sensor in the unit allows the unit to be programmed using the optional DD-LCDHS
programming handset. This gives complete flexibility over many of the operating parameters. Without the
handset, manual adjustments can be made to the sensitivity, lux and time settings using controls
accessible behind the lens.
The UHS user handset can be used to change output lux levels and override the lights on or off.
This product is supplied complete with a 3m lead.
2. Description and Operation