Repurposing Siamese Cable from old camera system

[kyphos]

Similar question asked and answered on previous thread.

Power for Wyze Cam Over Coax Cable?

It’s best to feed a higher voltage over the coax (say 12VDC), and then use a DC-to-DC converter at the camera to obtain 5VDC. There are several articles posted on this forum about this technique. An elegant solution to obtain power is a standard coax 12VDC power adaptor (intended for powering CATV distribution amps). https://www.amazon.com/Mountable-Adapter-100-240-Output-Subscriber/dp/B06ZZXWNTX/

Also see:

Possible alternative powering method?

Hello. Love the cameras and ordered a bunch. My house has existing wiring on key junctions for motion detectors I no longer use; all these wires powered the detectors from a central alarm box. Is there any way, I can split the usb cable and attach to these wires if the amperage/voltage are correct? I imagine this is a possibility for thousands of customers and if it is possible. I would gladly pay for some connector that did this.

The odds of success are zero if you simply splice a microUSB on to the end of the existing power plant. The 12VDC from the Swann power adapters will fry the Wyze cameras.