Reddit reviews Cutequeen 2PCS 50W Watt 25 Ohm Resistor Aluminum Case Wirewound Chassis Mounted (Pack of 2)

I did it.My transformer is shared with my upstairs neighbors so I had to reroute the wiring. It was actually very straightforward. This is the exact one I bought.

https://www.amazon.com/dp/B06XQWJ4JP/ref=cm_sw_r_sms_c_api_i_hgFXCbM0CQPC4

If you do not have doorbell chimes, you must use a resistor to simulate the wiring that would be in the mechanical chime. And you'd need a resistor on one of the wires for each doorbell. Also, running two of them off a tiny 10VA transformer probably won't work very well. It may, but you may have problems with slow/no charging also. But the resistor not being there will prevent it from charging entirely. Also, don't press the button or it could fry the other Ring since they're both attached without the resistors.

https://www.amazon.com/Cutequeen-Aluminum-Wirewound-Chassis-Resistor/dp/B06XQWJ4JP/

That's a 2-pack of compatible resistors. Since you're operating two in parallel off one transformer, you'll want to picture the wire nuts as your connection to the transformer, as it relates to the image on Ring's site. So the resistor will go on the red wire between the wire nut and the station wire, not between the wire nut and the transformer.

You should have a wire wound resistor inline to protect the transformer from frying. Or wire the power kit inline in bypass mode to provide a self resetting fuse. Obviously something is shorting out the transformer. Pushing the button will do that and with no load, could damage the internals of the pro as well.

Cutequeen 2PCS 50W Watt 25 Ohm Resistor Aluminum Case Wirewound Chassis Mounted (Pack of 2) https://smile.amazon.com/dp/B06XQWJ4JP/ref=cm_sw_r_cp_apa_i_sEXEDbTXRHQBD