HAI Glass Break Sensor Wiring

[e2djonline]

Hi, I have 12 glass break sensors throughout the house. They are currently wired 12v, GND, Green, White. All the white wires are connected together in the attic, I just have the green from each sensor coming to the panel. Can I wire them to separate zones? Do I connect them to the + or - on the Omni panel? Where would I connect the group of white wires?
 
Thanks,
 
Emmett

 

[Del91574]

Yes, you can separate.
 
You would need to either install the EOLR as a jumper between 1 leg of the relay at the device and the - at the device or at the junction, preferably at the device. Connect green to zone +

 

[Desert_AIP]

I think you need to separate the white wires and wire each pair of white and green with an EOL resistor to each zone you want to use.

If you put multiple sensors on a single zone, you need to wire in series,
Green from one sensor to white of the next, etc.
Place an EOL at the farthest sensor and return a single green and a single white to the panel.

With all the whites connected, every sensor is in parallel.

 

[video321]

I think you need to separate the white wires and wire each pair of white and green with an EOL resistor to each zone you want to use.

If you put multiple sensors on a single zone, you need to wire in series,
Green from one sensor to white of the next, etc.
Place an EOL at the farthest sensor and return a single green and a single white to the panel.

With all the whites connected, every sensor is in parallel.

True, but it would fine if the greens are wired to individual zones at the panel as the panel should just be using a common ground anyway. So a single white to any zone ground.
Of course... I would never do it this way and would always run all my wires to the panel and make any connections there.

 

[Del91574]

I think you need to separate the white wires and wire each pair of white and green with an EOL resistor to each zone you want to use.

If you put multiple sensors on a single zone, you need to wire in series,
Green from one sensor to white of the next, etc.
Place an EOL at the farthest sensor and return a single green and a single white to the panel.

With all the whites connected, every sensor is in parallel.

Not true....devil in the details. None of the OP's devices are in parallel presently and none of the junction would need to be touched or the whites connected to anything external besides the panel's negative on the aux power or a zone common, and land the green on the zone +. Not parallel at all, just using a common connection to the panel's common negative reference.

If you're running a common negative, you only need 3 wires per zone at the panel for a powered device. Still supervising the circuit and cable the same as 4 wire methods.
 
@321,  the whites don't need to be connected to anything at all, everything you need to do can be accomplished at the detector. Either you install the EOLR from the device's negative to one side of the relay and connect the green to the other or you use a jumper wire doing the same and you can negate the EOLR or install at the panel.
 
In actuality, it's a very valid way to wire a powered device and eliminate the need to use a chicklet (b connector) in the device in the field while still supervising the zone and cable.

 

[Desert_AIP]

I stand corrected.
 
:blush: