Hi @Nixta. The Doorbell Wired must be hardwired to an existing doorbell system or transformer with 10-24 VAC, 40VA max, 50/60Hz for continuous charging, so you'll want to make sure your doorbell system meets these requirements. As for the jumper cable itself, you can find a wiring diagram for the Doorbell Wired in our Help Center Article [here](https://support.ring.com/hc/en-us/articles/4405783047188-Wiring-Diagrams-for-Ring-Doorbell-Wired-) as well. I hope this information helps! :)

Thx. Bought a new doorbell with transformer. Everything works. Sometimes it takes some time to connect to camera and picture freezes. Got 100/100 Mbit/s connection.

Glad to hear its working, @Nixta! For video connection or quality, check out your [RSSI in the device health section of the Ring app](https://community.ring.com/t/how-it-works-your-ring-device-rssi-good-vs-poor/229), to ensure for optimal wifi signal. Please also ensure there is not a VPN enabled on your mobile device. I recommend trying out the Rapid Ring app as well, as it is designed for the quickest access to live view. :)