Description Enhanced Power Supply: This 16-volt, 30VA doorbell transformer is designed to power up to three hardwired doorbell chimes or modern smart video doorbells, ensuring reliable operation and eliminating issues like low chime volume or poor video quality. Effortless Installation: Mount this transformer easily to any electrical box using the threaded connector or screws provided. It supports an input voltage of 120 Vac, 60Hz and delivers an output of 16 Vac at 30VA, making setup quick and straightforward. Resolve Underpowered Transformer Problems: If youre experiencing connection issues, low quality video resolution, or insufficient chime volume, this transformer is the solution, providing ample power to handle demanding devices. Broad Compatibility: Works seamlessly with Ring Video Doorbell Pro, Nest Hello, Nest thermostats, Smart Greet Wi-Fi Doorbell, Bell Doorbell, and other similar devices. Compatibility with multiple ensures versatile use. Color: As Shown Material: Metal Package Contents: 1 * Doorbell Transformer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.