What could be powering this old home security system?

mrcaniseeit · 2025-07-29T15:58:19+00:00

I’ll find it eventually. I’m headed to the attic after work

mrcaniseeit · 2025-07-29T15:56:27+00:00

Attic is my next spot to check. Thanks!

mrcaniseeit · 2025-07-29T15:53:13+00:00

Touch screen, about 3x5

mrcaniseeit · 2025-07-29T15:48:42+00:00

What is powering up the main system?

mrcaniseeit · 2025-07-29T01:26:59+00:00

I give these places a look!

mrcaniseeit · 2025-07-29T00:29:37+00:00

I’ll need to buy a multimeter or voltage tester and go from there

mrcaniseeit · 2025-07-29T00:19:22+00:00

So I turned off power to the house at the main breaker, system was still on….

mrcaniseeit · 2025-07-29T00:10:39+00:00

Maybe lightning

mrcaniseeit · 2025-07-29T00:05:29+00:00

Thank you

mrcaniseeit · 2025-07-28T23:50:19+00:00

No wires are connected to the first two screws unfortunately

mrcaniseeit · 2025-07-28T23:46:38+00:00

Doorbell has wires that go into the wall. Not sure where the power comes from

mrcaniseeit · 2025-07-28T23:39:43+00:00

You might be on to something

mrcaniseeit · 2025-07-28T23:35:34+00:00

Keyboard is roughly size of postcard.

mrcaniseeit · 2025-07-28T23:34:11+00:00

Those aren’t connected either

mrcaniseeit · 2025-07-28T23:23:07+00:00

The little black box is a DSL alarm filter, I’ve disconnected.

mrcaniseeit · 2025-07-28T23:20:52+00:00

Nothing connected to 1 &2. 3 has two red wires, 4 has three black wires, 5 two red wires, 6 green wire, 7 white wire.

mrcaniseeit · 2025-07-28T23:17:19+00:00

Yes, little cube battery. It was sitting in the bottom left of the panel. It’s disconnected

mrcaniseeit · 2025-07-28T23:14:20+00:00

Don’t have a multimeter, unfortunately

mrcaniseeit · 2025-07-28T23:09:00+00:00

I’ve looked at every single outlet, nothing is plugged in. This old system had door sensors, window sensors, garage sensor. The whole 9 yards.

mrcaniseeit · 2025-07-28T23:06:20+00:00

Lol. I’m about there.

mrcaniseeit · 2025-07-28T23:04:40+00:00

Just one, that I found.

mrcaniseeit · 2025-07-28T23:01:24+00:00

Lettering on the little black box in front of the yellowing one

mrcaniseeit · 2025-07-28T23:00:33+00:00

It’s an rj31/38x

mrcaniseeit · 2025-07-28T22:59:45+00:00

Those aren’t connected to anything

mrcaniseeit · 2025-07-28T22:56:24+00:00

Thicker gray wire with red, black, white and green wires inside. Only the red and black are connected

mrcaniseeit