The MWS6-PRM PIR (passive infrared) 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 MWS6-PRM 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. When an area is no longer occupied the load will switch off after an adjustable time out period.
Two modes of operation are available:
Presence detection:
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. If an external switch is connected, this can override the lights off (after the detection time period has elapsed it will revert to automatic operation). An integral adjustable photocell allows the lights to be kept off if there is sufficient ambient light.
Absence detection:
The load is manually switched on using an external switch. When the area is no longer occupied the load will automatically switch off after the adjustable time period has elapsed. Pressing the switch again during occupancy override the lights off (after the detection time period has elapsed it will revert to automatic operation).
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 the controls on the rear of the sensor head.
The UHS user handset can be used to change output lux levels and override the lights on or off.
Microwave Movement Sensor - Ceiling (258.8 KiB, 1,291 hits)
