Amazon.com: PROTECH Transformer - 40 VA, 120/24V, OEM Mount w/Fuse : Industrial & Scientific
Functional Device TR50VA004 1 Phase Control Transformer 480/277/240/120 Volt AC Primary 24 Volt AC Secondary 50 VA Rib: Amazon.com: Industrial & Scientific
Xwartre 16V 30VA Doorbell Transformer Compatible with Ring Video Doorbell, Nest Hello Doorbell, eufy Security Doorbell, Arlo Doorbell. Transformer Power Supply - - Amazon.com
Isolation Transformer, Quick Pack, 56 VA, 2 x 115V, 120V, 500 mA: Electronic Components: Amazon.com: Industrial & Scientific
Amazon.com: Newhouse Hardware 3TRAN Tri-Volt (8vac/10VA, 16vac/10VA or 24vac/20VA) Transformer for Ring, Nest and Standard Doorbells 1pk, Assorted : Everything Else