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
Packard - PACKARD - PF42440 Control Transformer Class Ii Foot Mount, 40V/24V
Maxdot 24V 40VA Thermostat and Doorbell Transformer, Power Supply Compatible with Nest, Ecobee, Sensi and Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell (1 Pcs) - - Amazon.com
24V 40VA Control Transformer, Primary 120, 208, 240V Secondary 24V Isolation Transformers,24V Transformer with Foot Mount for HVAC Furnace Multi Tap
Amazon.com: Class 2 General Purpose Transformer 120V 75VA 24V Secondary (Set of 6) : Electronics
Thermostat / Doorbell Transformer, 24V 40VA Power Supply Compatible With Honeywell, Nest, Sensi And Ecobee Thermostat, Doorbell Transformer For Nest Hello And All Versions Of Ring Doorbells - - Amazon.com
24V LED Power Supply - Lustaled Waterproof IP67 15W 24 Volt DC Transformer 120V AC to 24V DC Constant Voltage Outdoor LED Driver Converter for LED Strip Lights CCTV Camera Security System (2-Pack)
Emitever 120W Triac Dimmable LED Driver,Power Supply,AC 120V to DC 24V Transformer,Compatible with Lutron and Leviton Dimmers,for LED Lighting,Class 2,ETL Certified - - Amazon.com