Amazon.com: MGT-1650 Class II AC Power Supply (16.5VAC, 50VA)
HQRP 16V 30VA Transformer Compatible with Zmodo Nest Eufy Nutone Ring Doorbell Hardwired Door Chime Power Supply Adapter Door-Bell 120v-to-16v Replacement, UL - - Amazon.com
Amazon.com: PWS-1650 16.5V AC 50VA Class II Power Supply AC Adapter UL 16V Transformer Plug with terminals : Industrial & Scientific
HQRP Tri-Volt (8V 20VA, 16V 30VA or 24V 30VA) Transformer Compatible with Ring, Nest and Standard Doorbells Door Chime Power Supply Adapter Door-Bell 120v-to-8v-16v-24v Replacement, UL Listed: Amazon.com: Tools & Home Improvement
24V 40VA Thermostat and Doorbell Transformer, Power Transformer Compatible with Nest, Honeywell, Ecobee and Sensi Thermostat, Nest Hello and All Versions of Doorbells - - Amazon.com
Control Transformer, 50VA, 480VAC: Electronic Transformers: Amazon.com: Industrial & Scientific
HQRP Tri-Volt (8V 20VA, 16V 30VA or 24V 30VA) Transformer Compatible with Ring, Nest and Standard Doorbells Door Chime Power Supply Adapter Door-Bell 120v-to-8v-16v-24v Replacement, UL Listed: Amazon.com: Tools & Home Improvement
Amazon.com: weideer Input 110V 50/60HZ Output 24V 10VA Power Transformer AC/AC Single Phase Transformer for Lighting Power Supplies, Audio Equipment etc. Various Small Power Supplies K-030 : Electronics
Amazon.com: PWS-1650 16.5V AC 50VA Class II Power Supply AC Adapter UL 16V Transformer Plug with terminals : Industrial & Scientific
Amazon.com: 9070T50D23 - Square D Industrial Control Transformer : Industrial & Scientific
Amazon.com: Amseco XR1250LED Plug In Transformer Power Supply 60HZ 12VAC 50VA : Electronics
HQRP 120V-240V to 24V 40VA Transformer Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Doorbell and All Versions of Ring Doorbell Power Supply Adapter Door-Bell 120v-240v-to-24v, UL - - Amazon.com
Transformer 50VA 277V-24V 1 hub Class 2 UL Listed US & CA, CirBkr: Electronic Transformers: Amazon.com: Industrial & Scientific