Elk M-1 + ISY9944i and motion detectors

[stickball84]

Quick question... 
 
Can ceiling mounted motion detectors be programmed for security when the system is armed/away (via ELK-M1) and also be programmed as occupancy sensors for lighting control when we are home (via ISY994i)?
 
Thanks.
 
 

 

[wuench]

Yes.

 

[stickball84]

They are ceiling mount (every room) and I could make a few glass break/motion combos, although I not sure that's necessary...
 
I need to purchase them, anybody have any favorites/recommendations? 

 

[gatchel]

Occupancy and security motions are not the same. You may get false alarms when trying to use occupancy sensors as security devices.
 
If you haven't purchased them yet, buy security motions for security and occupancy motions for occupancy. You will be happier in the long run on both the security and lighting side of things.

 

[Del91574]

The above is absolutely true and the best advice.
 
To add, a detector designed for security is optimized for only activation on an absolute. Those for occupancy are far more sensitive.

 

[stickball84]

Thanks...will do.

 

[wuench]

Yeah, I have a visionic 360 dual tech mw/pir and there is significant delay.  I ended up moving it to the main board off an expander and setting fast loop both of which helped, but still too slow.  I have a couple of sensorswitch PIRs which I plan to use instead.  For some reason the sensorswitches were hard to come by, both Amazon and AO were out of them and Worthington had them on backorder.  I am not sure if they are out of production or just having supply issues, but there don't seem to be a lot of other options for 12v 360 PIRs for occupancy.
 
If you have a large room the delay may be more acceptable so you might get away with security PIRs, and setting a slower ramp rate actually kind of helps make it a dramatic effect.   For smaller rooms like the bathroom I have mine in it is kind of annoying, the light comes on a second or so after you are in the room.

 

[stickball84]

I ended up separating security and automation as suggested.  I went with dual-tech motions and glass break/motion combos for security and I'll use occupancy sensors for automation, specifically, to turn off the lights in empty rooms.