This is a Endurance Pro 16V 30VA Doorbell Transformer Compatible with Ring Video Doorbell Pro Hardwired Door Chime, Nest Hello Video Doorbell. Replace old or under powered transformers.
Specification: Primary Input: 120V AC 60Hz Secondary
Output: 16V AC 30 VA,
Class B Insulation Class 2 transformer 16V 30VA doorbell transformer:
low voltage hardwired door chime transformer For use with Ring Doorbell, Ring Doorbell 2, Ring Video Doorbell Pro, Nest Hello Video Doorbell
Easy to install: screw down and thread clamps to electrical box. Superior Quality you can Trust!