Corridor Function Microwave Sensor - White

This is a microwave sensor with corridor function, the control that lets a light rest at a low standby level when a space empties instead of burning at full power with nobody there. Microwave sensing sends out a low-power signal and reads the reflection from anything that moves, so it responds to movement rather than to the body heat a passive infrared sensor looks for. The unit's label gives its input as 12V DC and its output as 0-10V. That output is a control signal, not power for the light: it tells a 0-10V dimmable driver what level to run at. The sensor is an oblong white module with a small dome on top.

Corridor function belongs in spaces people pass through rather than stay in: corridors, landings, stairwells, communal hallways and storerooms. Someone walks in and the light comes up to full; once they have gone and the hold time runs out, it drops to standby instead of going straight off, so a stairwell is not plunged into darkness the moment it empties. It suits electricians and building managers working with 0-10V dimmable fittings. Before ordering, check two things: that the fitting's driver accepts a 0-10V signal, and that a 12V DC supply is available to power the sensor.

Six switches set its behaviour, and the table printed on its side lists each setting. Detection area runs at 100% or 50%. Hold time, how long the light stays at full after the last movement, is 5 seconds, 1 minute, 3 minutes or 10 minutes. The daylight sensor stops movement bringing the light on while the space is brighter than 30 lux, or can be disabled. Standby is 20% or 0%, held for 15 minutes or indefinitely. It is sold as a single sensor, with a minimum order of one.

Which fittings will this sensor work with?

It needs a fitting whose driver accepts a 0-10V dimming signal, and a 12V DC supply to power the sensor, as printed on its label. The manufacturer does not state which fittings it is designed for or how it connects, so check the fitting's driver and connections before you order.

What does corridor function actually do?

Once the space empties and the hold time ends, the light drops to a standby level instead of going straight off. Standby is 20% or 0%, and it lasts 15 minutes or indefinitely, so a corridor can sit at 20% until the next person walks through.

How long does the light stay at full after someone leaves?

That is the hold time, set on switches 2 and 3: 5 seconds, 1 minute, 3 minutes or 10 minutes after the last movement it detects. A short hold suits a corridor people walk straight through; a longer one suits a storeroom where someone stops to look for something.

Will movement bring the light on during the day?

Only if you choose. With the daylight sensor set at 30 lux, movement brings the light on only when the space is darker than that; disable the daylight sensor and movement brings it on at any time of day.

Will the light go fully dark at the 0% standby setting?

That depends on the fitting's driver. Not every 0-10V driver switches fully off when the signal is at its lowest; some rest at a minimum level instead, so check the driver's specification if full darkness matters.

Can I make its detection area smaller?

Yes. Switch 1 sets the detection area to 100% or 50%, and the smaller setting helps where it reacts to movement you would rather it ignored, such as people passing an open doorway.