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10 Best 24v 40va thermostat ands of 2026

Explore top picks

  • 1

    Doorbell Transformer 24V 40VA AC Power Supply Thermostat Power Adapter Hardwired Door Chime Transformer
    GIVEUBED

    Doorbell Transformer 24V 40VA AC Power Supply Thermostat Power Adapter Hardwired Door Chime Transformer

    9.9
    Exceptional
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  • 2

    24V 40VA Plug-in AUTO-Resetting AC Transformers, Doorbell AC Power Supply Adapter with PTC Fuse - Ring Doorbell and Thermostat, Compatible with Nest, Sensi, Honeywell - (by CENTROPOWER)
    CENTROPOWER

    24V 40VA Plug-in AUTO-Resetting AC Transformers, Doorbell AC Power Supply Adapter with PTC Fuse - Ring Doorbell and Thermostat, Compatible with Nest, Sensi, Honeywell - (by CENTROPOWER)

    9.6
    Exceptional

  • 3

    BOJACK 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
    BOJACK

    BOJACK 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

    9.5
    Excellent
    Our Rating

  • 4

    Endurance Pro 24V 40VA Thermostat Doorbell Transformer, Power Supply Adapter Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Hello, Ring, Hardwire Door Chime
    Endurance Pro

    Endurance Pro 24V 40VA Thermostat Doorbell Transformer, Power Supply Adapter Compatible with Nest, Ecobee, Sensi, Honeywell Thermostat, Nest Hello, Ring, Hardwire Door Chime

    9.4
    Excellent

  • 5

    24V 40VA Thermostat and Doorbell Transformer, Power Transformer Compatible with Nest, and Honeywell, and Ecobee and Sensi Thermostat, Nest Hello and All Versions of Doorbells
    WUYELIN

    24V 40VA Thermostat and Doorbell Transformer, Power Transformer Compatible with Nest, and Honeywell, and Ecobee and Sensi Thermostat, Nest Hello and All Versions of Doorbells

    9.3
    Excellent
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  • 6

    24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat
    WUYELIN

    24VAC 40VA Plug in Transformer,Doorbell Transformer Compatible with All of Doorbell，Nest, Ecobee, Sensi and Honeywell Thermostat

    9.1
    Excellent

  • 7

    24V AC 40VA Transformer for Wired Doorbells & Thermostats - Hardwired Power Supply Compatible with Ring Video Doorbell Pro/2/3/4, Nest, Ecobee, Honeywell - Easy Install with 40VA Output
    VIIVRIA

    24V AC 40VA Transformer for Wired Doorbells & Thermostats - Hardwired Power Supply Compatible with Ring Video Doorbell Pro/2/3/4, Nest, Ecobee, Honeywell - Easy Install with 40VA Output

    • Power Rating:40VA
    • Usage:Residential, commercial, industrial
    • Input Voltage:120V AC 60 Hz
    • Compatibility:Ring, Nest, Ecobee, Honeywell
    • Mounting Type:Screw, thread, clamp
    8.8
    Very Good

  • 8

    VIIVRIA 24V 40VA Doorbell Transformer - Heavy-Duty Copper Core for Ring Pro/2 & Nest Hello, Easy Install Hardwired Power Supply, Thermostat/Chime Compatible
    VIIVRIA

    VIIVRIA 24V 40VA Doorbell Transformer - Heavy-Duty Copper Core for Ring Pro/2 & Nest Hello, Easy Install Hardwired Power Supply, Thermostat/Chime Compatible

    8.7
    Very Good

  • 9

    24 Volt Transformer, 40 VA AC Transformer Plug in with PTC Fuse Compatible with Ring Doorbell and Thermostat, Compatible with Nest, Ecobee, Sensi/Honeywell/ 24V Adapter (1 Pack)
    Hotop

    24 Volt Transformer, 40 VA AC Transformer Plug in with PTC Fuse Compatible with Ring Doorbell and Thermostat, Compatible with Nest, Ecobee, Sensi/Honeywell/ 24V Adapter (1 Pack)

    8.4
    Good

  • 10

    EPLZON 24V 40VA Thermostat and Doorbell Transformer, All Versions of Ring Doorbell
    EPLZON

    EPLZON 24V 40VA Thermostat and Doorbell Transformer, All Versions of Ring Doorbell

    • Power Rating:40 VA
    • Usage:Thermostats and doorbells
    • Input Voltage:120 VAC, 60 Hz
    • Compatibility:Honeywell, Sensi, Ring, Nest
    • Mounting Type:Screw down and thread clamps
    8.3
    Good