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kohaiut 01-11-2009 10:06 AM

Occupancy Sensor: Did I wire it correctly?
Hi all,

I have replaced a single light bulb in my garage with a hi-bay fluorescent fixture with a 360 degree occupancy sensor. I wired it up as I understood and the light works from the light switch, but the sensor doesn't seem to do anything.

Can somebody verify if I have wired it correctly?

What wires I have:
Ceiling - black, white, copper

Sensor - black, black, white

flourescent fixture - black, white, copper

How I wired it:
Ceilng Black -> Sensor Black #1

Ceiling White -> Sensor White & Fixture White

Sensor Black #2 -> Fixture Black

Fixture Copper -> Ceiling Copper

The sensor documentation indicates it detects if the black wires are backwards and adjusts for it.

Is this wired correctly?


Sensor doc:

joed 01-11-2009 10:09 AM

Did you turn the wall switch on? It won't work if you leave the wall switch off.

kohaiut 01-11-2009 10:26 AM

Tested twice
The sensor's factory default is to turn the light off after 10 minutes of inactivity. It just seems to stay on and not turn off.

jwhite 01-11-2009 11:28 AM

Check out page one of the data sheet.
Look at start to high section.

It says that the PIR sensor has a 100 hr lamp burn in feature and tells how to tell by looking at the led if this is turned on.

There are no clear directions on how to change the mode, and I looked at the web site and see no other downloads. Purhaps you recieved a seperate set of directions with the sensor.

In addition look for other modes that can sometimes be changed by turning the wall switch on/off rapidly. Some PIR sensors have an always on mode and then an under control mode that can be switched this way.

kohaiut 01-11-2009 12:21 PM

100 hr burn in
I did see mention of the 100 hr burn-in. The product came with a card mentioning it is off by default but that the LED will tell me what it is set at along with the time delay settings.

However, for the life of me, I can't find the LED light on the unit. I don't see anything blinking. I've tried looking at their site to try to find a diagram of the unit showing me where the LED is supposed to be. Sure makes me feel like an idiot.

jwhite 01-11-2009 01:00 PM

I believe you have it wired right. You will need to figure out how to set the timers and mode.

It may be done by dip switches on the device itself.

kohaiut 01-11-2009 01:05 PM

Thanks for the help. It is good to know the wiring is probably not the issue. I'll bug SensorSwitch's tech support about the LED.

For the search engines, the sensor I'm using is the SensorSwitch CMRB-6.

kohaiut 01-14-2009 10:13 PM

My fault...
After talking to their tech support, which was easy to get to and friendly, it turns out my white/neutral wire was loose and not making a solid connection. Doh!

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