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
Lennox 13H28 Transformer, 208/230, 24V: Amazon.com: Tools & Home Improvement
Block Isolation Transformer, 100 Va, 1 X 230V, 1 X 400V, 2 X 24V, 4.2 A Rohs Compliant: Yes - STEU100/48: Amazon.com: Industrial & Scientific
Toroidal Transformer 192VA Input Voltage 230V AC Output Voltage 24V AC: Electronic Component Motor Drives: Amazon.com: Industrial & Scientific
Transformer, 75VA, 208-230V Primary
Amazon.com: BASLER Electric BE242340RDD 40VA Class 2 Transformer, PRI:230V, SEC:24V : Electronics
24V 40VA UL Listed Doorbell Transformer, 24 Volt Thermostat Power Supply Adapter for Ring/Nest Hello Doorbell, Nest/Ecobee/Honeywell Thermostat
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
New SQUARE D 9070T150D2 150VA 240/480V-AC 24V-AC Transformer D324414: Amazon.com: Industrial & Scientific
24 Volt Transformer, C Wire Adapter Thermostat, Competible with All Versions of Ring Doorbell and Thermostat for Nest Ecobee, Sensi and Honeywell, 315" Long Cable 24V Transformer - - Amazon.com