The Ring Hardwired Transformer is an electrical accessory, not a doorbell. It supplies the low-voltage power that Ring's wired video doorbells need, delivering 16V AC at 30VA from a standard 120V AC circuit. Many older homes have an original chime transformer rated too low to run a modern video doorbell reliably - the symptoms are a doorbell that will not charge, drops offline, or reboots during live view. Swapping in this transformer is the standard remedy, and it is a common truck-stock item for installers.
Ring lists it as compatible with the Video Doorbell Wired, Wired Doorbell Plus (formerly Video Doorbell Pro) and Wired Doorbell Pro (formerly Video Doorbell Pro 2). It mounts by screwing down or clamping to an electrical box via its threaded nipple and is wired on the line side - work that must be done with the circuit off and, in many jurisdictions, by a qualified electrician. The compact 2.55 in body fits typical junction box installations in a basement, utility room or attic.
Key Features
- 16V AC / 30VA output sized for Ring wired video doorbells
- Fixes underpowered doorbells on older chime transformers
- Mounts to a standard electrical box by screw or threaded clamp
- Genuine Ring part for reliable doorbell power
- Compact footprint for tight junction box locations