Description says both both normally closed ...Which is it both normally closed contactsor one Normally Open and one Normally Closed. I need a N/O contact to turn on alarm
1041269
Possibly you have a bad one?mine have 3 screws.one NO =normally openone OC. = Normally closed
1041270
We installed our alarm system a little while ago. However if you blow up the picture, you will see both common normally closed and normally open. In other words, it does both.
678701
It's normally closed. Push to open the circuit (maintained with twist to release). It has one contact module installed with room for a second.
2196435
I believe the switch is open when the plunger is out. Then the alarm is armed the current runs through the wires and the switch. When the current is Brocken it trips the alarm. This keeps a robber from cutting a wire. It will also trip the alarm if this happens. Hope it helps.
1852953
Both. The alarms are AC powered with battery backup. You can optionally link each alarm to trigger multiple alarms when one goes off...if the house has been wired with the extra wire for that ability.
1236356
If you look at schematics, the relay has both normally open and normally closed group. Depending which contacts you use, you will have either normally open or normally closed relay.
493924
If you hook up a regular wall switch you can open and close as you like when the switch is off the contactor is off when the switch is on power flows to the contactor and completes the circuit
1437926
Both! On this model is a closed unit. You just depress the buttons on each end and the whole thing drops out. The new one just clicks back in. Easy!
1625237
No it is not.. been through this myself. I needed a simple on off contact switch this one was it.
1815957
No it does not. The only connection is to attach the float switch that when triggered closes the contact and the alarm sounds
516361
When the magnet and contact are positioned together they make a normaly closed loop circuit. That is the way most alarm contacts work. This is opposite for what you are needing. Try mounting a normaly closed button switch to the back area of the closed drawer. This would push the switch button into an opened state. When you opened the drawer the button would be released allowing the switch contacts to return to their closed state and Allowing voltage to flow to your light
423906
When the magnetic connection between the two parts of this sensor is broken, your alarm system will register an open condition. I guess if the window or door is struck in such a way that would cause the sensor parts to move enough to break the magnetic contact it might trigger the alarm. However, I think they were only meant to register open or closed.
1982996
It alerts me when opened or closed no matter what. Not sure if power is lost.
544823
I am having problems closing it after I set combination who can I call when I try again rina320@charter.net
150294
I agree that the two freeze alarms on the same phone line will work but I wonder how you would call each freeze alarm to check on each alarm's status.
1577519
The contact could only be mounted to one door which would leave the other with no alarm. Unless, you mounted the the whole alarm unit. To one door and the contact to the other door. That wouldn't look good.
2139226
The two base stations are both receivers; therefore the will not talk to each other. But I don' t see any reason you could register all the alarm sensors in both key pads. In this model you would have to make sure both systems turned get turned off when entering. A key fob may be the answer here. Also, only register the particular door entry sensor next to that local key pad. The only issue I see is motion detectors that may be in the path between going from key pad disarmed initially and the second key pad's location.
1173965
Normally open. Applying current to the switched side will close the load side.