Camera Doorbell power over alarm cabling

condord

Hi,

The doorbell wiring in my house is 8v and not enough to power my Reolink doorbell camera. I know I could get an electrician to replace the transformer in the fusebox with 12v, but that will cost me more than the camera! (Camera supports 12v - 24V)

The house is wired for an alarm that is not in use. The wire is 6 core and one end is poking out conveniently located right by the frontdoor. The other end is in the utility room of the house with all the cat6 cables etc.

My question is, would I be ok to use the doorbell AC/DC adapter plugged in in the utility room, connected to red&black on the alarm cable which I'd extend and run to the doorbell?

The adapter properties are:

AC/DC Adapter

Input: 100-240v~ 50/60Hz 0.3A Max

Output: 24v 0.5A 12.0W

The cables are rated to a lot more voltage than the adapter supplies, and I'm guessing a new doorbell transformer would do a similar job of converting AC - low voltage DC, so I think it should be ok?!

Any suggestions/comments welcome.

Thanks,

Conor

10-10-20

https://www.boards.ie/discussion/2058349377/camera-doorbell-power-over-alarm-cabling

Hi, yes you can normally do this alright. If you have problems with voltage drop then add in another pair to the circuit and that should fix it. Ideally you should put a fuse on that wire near the power supply, 1A or 2A should do it to protect the cable.

https://gleanntronics.ie/en/products/30mm-fuse-holder-on-cable-2451.html?query_id=3

condord

https://www.boards.ie/discussion/comment/122076041#Comment_122076041

Ok thanks! I haven't seen those in-wire fuses before. That's a good idea to be extra cautious. I don't think voltage drop should be an issue because the doorbell can run at 12v and the voltage supplied by adapter will be 24v. I'll wire it up and measure on a multimeter first anyway.

10-10-20

https://www.boards.ie/discussion/comment/122076133#Comment_122076133

True point! lol!

the_amazing_raisin

It's worth checking the doorbell transformer in the CU to see if it has different voltages available

I had a similar issue and my transformer had 12V and 24V outputs, so I just moved the doorbell wire to one of those and used the existing doorbell wire

condord

https://www.boards.ie/discussion/comment/122076361#Comment_122076361

Thanks for the suggestion, but I checked and it's 8v only unfortunately.