Occupancy Detectors - Sensor Switch PDT-9 dual tech

relay

Member
Hi there.
I have an upcoming chance to grab quite a few of these dual tech occupancy detectors at a fraction of the normal price.
They run on 12v, only pull about 4ma each and have a low voltage relay built in.
It uses PIR AND microphonics for really good detection. They seem to work well where they are installed.

Has anyone used one of these connected to an automation panel? They look ideal for this but a little on the expensive side at around $100/e discounted.
http://www.sensorswitch.com/OnlineCatalog.aspx?sn=CM+9

My problem is that I don't think I have it in me to run a bunch of wire in my attic for these since they are ceiling mounted. My attic is all trusses and has a 2nd layer of insulation running opposite the joists to increase the insulation. I would want about 20 of them installed and that seems way too hard (:
 
One of our larger sites has a couple thousand of these (I'd say, rough guess) tied into lighting loads and large automation controller hardware.

Can't help with the wire (or lack of).
 
The PDT9 that you linked to is the base model. No relay. Which is fine. For occupancy detection in a home, the relay makes noise - and the noise detection IMHO makes them prone to false occupancy. You can program that off, no problem. The PDT9 works great as an occupancy detector and works well with ELK by supplying a high signal for the duration you program - hooked up to a standard zone will keep it violated nicely. They are sort of large compared to others I have played with but after a while you don't even notice them.
 
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