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New installation - Elk M1
Posted 28 July 2018 - 08:53 PM
Posted 28 July 2018 - 09:10 PM
If there is some indication of what has been wired, such as a recessed window or door contact, or a junction box where a keypad would go, then you can use a tone generator and probe to trace the wiring. You would connect the tone generator to a wire at the panel end, and then use the probe to go around to each door, window or junction box to see if you can pick up the tone. When you find the tone, then you know where that cable goes. Repeat the process with each of the other cables.
If your house was really pre-wired, there should be a cable for a least several zones, plus a couple more for keypads. A zone might be a single door or window. Or all the windows in a room could be wired together as one zone. I'd expect there to be at least half a dozen cables or more back at the panel.
Edited by RAL, 28 July 2018 - 09:11 PM.
Posted 28 July 2018 - 09:19 PM
Posted 29 July 2018 - 08:03 AM
I’m guessing this may be for an intercom, but you can use it for the keypad if it goes to the closet.
Look at the door jam area for your front door and see if there is a small plug, flush with the surface of the wood jam. It may be painted over. The wiring will be behind this plug
Posted 12 August 2018 - 12:17 PM
Posted 12 August 2018 - 01:17 PM
With a good tone generator and probe, you may be able to trace the route of the wires from the one end you can find to wherever it runs to. The probe will be able to pick up a signal from the cable even if it is buried in the wall.
Connect the tone generator to the wire, and then use the probe to try and follow the path of the wire as it extends away from the starting point.
Often, the cables have twisted pair wiring, which can reduce the strength of the signal. You may need to experiment a little and connect the red lead of the tone generator to one wire in the cable, and then try the black lead on the other wires in the cable, one at a time. One combination may give you a better signal than another. If you still don't pick up a good signal, try connecting the black lead to something other than a wire in the cable, like the ground pin of a nearby outlet. Be sure you are connecting to the ground wire and NOT the hot or neutral wires!! Sometimes, just leaving the black wire of the tone generator hanging in the air connected to nothing will work.
It possible that the wires for the keypads are run in a daisy chain fashion, from one to another. But then you should see 2 cables at some of the locations.
Can you post pictures of what you see at the door, window, keypad and panel locations? Is the panel location sheetrocked, or is it open studs?
Posted 12 August 2018 - 02:46 PM
Posted 12 August 2018 - 03:04 PM
I wouldn't connect any wires to the panel until you know where each one goes. You can use a multimeter on the ohms scale to test the cables as to what's open and closed.
Posted 12 August 2018 - 03:40 PM
Posted 12 August 2018 - 11:23 PM
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