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Overview 

The MWS3A-PRM microwave presence detector provides 
automatic control of lighting loads with optional manual 
control. 
The MWS3A-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.  
The output channel comprises a mains voltage relay 
capable of simple on/off switching. 
Functioning as a presence detector, the unit can turn lights 
on when a room is occupied and off when the room is 
empty. Optional settings allow lights to be turned off in 
response to ambient daylight. 
The MWS3A-PRM has a unique adjustable sensor head 
that allows the area of detection to be optimised for the 
application.  

All functionality is fully programmable using an IR handset. 

Features 

Front features 

Back features 

Ceiling microwave presence/absence detector 

MWS3A-PRM 

Product Guide 

Microwave Sensor 

Detects movement within the unit’s detection range, 
allowing load control in response to changes in occupancy. 

IR Receiver 

Receives control and programming commands from an  
IR (infrared) handset. 

Light Level Sensor 

Measures the overall light level in the detection area  

Status LEDs 

The LED flashes 

R

ed to indicate the following: 

Power Input & Switched Output Connector 

Used to connect mains power to the unit and to connect a 
switched load. 

Switch Input Connector 

Two input terminals can be used to manually override the 
lights on or off. 

Walk Test LED active 

        

when movement is detected

 

Valid setting received 

 

Retaining Spring 

Retaining Spring 

Power Input 
& Switched 
Output Connector

 

Switch Input 

Connector

 

Sensor Lens 

which covers... 

 

Microwave Sensor 

IR Receiver 

Light Level Sensor 

Status LEDs 

Mounting Bezel 

Содержание MWS3A-PRM

Страница 1: ...y programmable using an IR handset Features Front features Back features Ceiling microwave presence absence detector MWS3A PRM Product Guide Microwave Sensor Detects movement within the unit s detecti...

Страница 2: ...ed In either case sensitivity to movement of the microwave sensor can be adjusted using the Sensitivity parameter HINT To assist in setting the Sensitivity turn on the Walk Test LED which will flash r...

Страница 3: ...shown opposite Avoid positioning the unit where direct sunlight may enter the sensor element Do not site the sensor within 1m of any lighting forced air heating or ventilation Do not fix the sensor to...

Страница 4: ...efore affixing the cable clamp The clamp MUST clamp the outer sheath s only Bend cores as shown Wire stripping details 1 5 4 3 Hole 74mm Attach cable clamp Flush fixing Surface fixing Head locking 1 3...

Страница 5: ...nified by the Shift 1 and Shift 2 LEDs Number of Shift key presses The functionality of the MWS3A PRM is controlled by a number of parameters which can be changed or programmed by any of the following...

Страница 6: ...ess of ambient light level However if there is sufficient ambient light they will turn off again after the Lux Time Note that whenever the an external switch is pressed whether in absence or presence...

Страница 7: ...7 This page intentionally left blank...

Страница 8: ...tralia and all of Europe except UK France Portugal Germany Switzerland Austria Slovak Republic Republic of Ireland 10 525GHz R3 France Portugal Switzerland 9 900GHz R4 Germany Austria Slovak Republic...

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