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Doorbell Transformer, 18V / 800mA Power Adapter for Ring Video Doorbell, Ring Video Doorbell Pro and Ring Video Doorbell 2, Transformer Compatible with Nest Hello Doorbell and Zmodo Smart Doorbell
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DEWENWILS Doorbell Transformer, 16V 30VA Low Voltage Transformers Compatible with Ring Video Doorbell Pro, Nest Hello
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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
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