I simply took out the mains cable from the old transformer and connected it to the bottom of the Ring transformer, I then took the doorbell cables from the chime and connected it to the top of the transformer and finally I mounted it in a din rail enclosure.

Using a transformer to supply a lower load than the nominal power reduces the power loss containing the temperature rise of a bell transformer used continuously.If the item comes direct from a manufacturer, it may be delivered in non-retail packaging, such as a plain or unprinted box or plastic bag. New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging . I installed a transformer by my consumer unit that is 24v / 500mA DC, but Ring are saying this isn't correct and i need an AC transformer plus the separate power pack which i think converts from AC to DC).

Probably better to get a bellbox, where the transformer is separate, that way you can switch the transformer at the consumer unit (mines in the garage). Permanently fails to function during overload or short-circuit presenting no danger to the user or surroundings. It does however perform well and was easy to install is not too unsightly but could be made to look more subtle such as a white colour. Your Ring Video Doorbell Pro requires a power source that supplies a minimum of 16 volts AC at ~20 volt-amps when connected directly to a transformer (supplied) or plug-in adapter. The ring video door bell will be taking power continuously and thus a transformer intended for normal door bells may not be suitable as a power supply to a video door bell system.

This power supply needs to be fed from a circuit breaker, otherwise it has no protection in the event of a fault!