Wiring SensorSwitch CM-9 to Omnipro II

[shivpaul]

Hey guys, I've been wondering if it's at all possible to wire the SensorSwitch CM-9 occupancy sensor to an Omnipro II panel.

Has anyone had success doing this? Or will I need to get an occupancy sensor with relay built in? Any help will be appreciated. Thanks much.

 

[ano]

This sensor is designed to control 120V loads. Why would you but that to connect to a 12v panel. I don't understand. Did you get these for free?

 

[TurboSam]

Shivpaul:  There are several threads on this site about using the SensorSwitch sensors to control the Elk, using the Elk's 12 volt AUX (or an auxiliary power supply unit) and then connecting directly to the ELK panel.  See this and this (or just search the CT site) 
 
I have an Elk, not an an Omnipro panel, but it seems to me you ought to be able to do the same thing with an OP if you have 12-24 Volts (from your panel, from panel auxiliary power supply, or from a SensorSwitch power pack).  You would then hook up the outputs to your Omnipro using whatever the comparable connections are to the ones specified for the Elk.  Assuming the Omnipro allows a comparable setup, you would not need the relay version of the SensorSwitch.  
 
ano:  The threads above detail how this kind of setup gives you the ability to have the SensorSwitch control more that a single 120 load.  My M1 panel (with CQC) controls my UPB lights and I can use the SensorSwitch to trigger much more that the light load in the room and provides much more flexibility.  With power from the panel (or aux power supply), I  don't have to even use 120 to power the sensor, which was very attractive to me.

 

[shivpaul]

Thanks a lot for your help TurboSam, I had read the last link you posted but wasn't successful. 
Am I supposed to have the negative wire from the SensorSwitch go to both the Auxiliary as well as the negative of the zone?

 

[TurboSam]

With the caveat that this works with the Elk M1 (and the Omnipro may have different power output or need a different kind of zone input or different EOL resistor), this is what I do:
 
The red wire from the sensor goes to the +12 VDC power from my Altronix power supply unit (the red wire originally went to the Elk's +12 VDC AUX supply, but I moved the sensors off the Elk's limited power capabilities), the black wire from the sensor goes to the Elk's zone negative, and the white wire from the sensor goes to the Elk's zone input.  A 2200 Ohm EOL resistor is then put on the panel between the zone negative (black wire) and the zone input (white wire).
 
Good luck
 
(I should add that, as I learned from this site, I have bonded the Elk's and the Altronix's DC negatives together)