Newhouse Hardware 30TR Doorbell Transformer, 16v 30va, Compatible with Ring Pro, UL Certified

Specifications: input voltage: 120 V AC, 60 hz, output voltage: 16 V AC at 30 VA, dimensions: 3.9 x 2.6 x 2.4 inch universal powering for single or multiple door chimes, thermostatic and more devices in one home. Replace the old and under powered doorbell transformers for better performance. Compatible with ring video doorbell Pro and ring doorbells, WiFi and other smart thermostats like Nest and ecobee and more. UL Certified to guarantee safety and quality.Safe and easy install I on. WARNING: This product may expose you to chemicals known to the State of California to cause cancer or reproductive harm