24VAC 50VA Wall Transformer with PTC Fuse Compatible with All Versions of Doorbell,Nest, Ecobee, Sensi and Honeywell Thermostat,Water Solftener,Screw Terminal Output - - Amazon.com
Amazon.com : BOSCH SECURITY VIDEO TR1850 Transformer 18 VAC, 50VA for CCTV Systems : Isolation Transformers : Electronics
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
Doorbell Transformer, 16V, 30VA Comptible with Ring Pro,Nest Hello - - Amazon.com
Amazon.com: Control Transformer, 50Va, 3.11 in. H : 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
Doorbell Transformer 16V 30VA AC Power Supply Thermostat Power Adapter Hardwired Door Chime Transformer - - Amazon.com
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
Amazon.com: PWS-1650 16.5V AC 50VA Class II Power Supply AC Adapter UL 16V Transformer Plug with terminals : Industrial & Scientific
Control Transformer, 50VA, 480VAC: Electronic Transformers: Amazon.com: Industrial & Scientific
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