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24V 500mA C Wire Adapter for Thermostat and Doorbell Transformer, Compatible with Ring Doorbell, N est, Ecobee, Sensi, Honeywell, Sensi Smart WiFi on OnBuy
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Bouge 24V 500MA Ring Doorbell Transformer, C Wire Plug in Adapter for Smart Thermostat, Compatible with Nest/Ecobee/Sensi/Honeywell/Skybell Thermostat on OnBuy
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