Top 10 24V 40VA Transformer – Door Bell Transformers

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1. Maxdot

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Nest Hello Doorbell and All Versions of Ring Doorbell Style 1, 24V 40VA Thermostat and Doorbell Transformer, Sensi and Honeywell Thermostat, Power Supply Compatible with Nest, Ecobee

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Maxdot #ad - Power up multiple thermostats / doorbells: replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for single or multiple thermostats and doorbells at the same time.

Universal compatibility: this 24v transformer fits for nest, ecobee, nest Skybell Doorbell, ring video doorbell Pro, Ring Video Doorbell 2, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, and other devices that require constant 24 volt power for operation. Ul certified and safe use: this 24 volt transformer is UL-certified, offers reliable performance. Specification: input is 120 v/ ac, 60 hZ; Output: 24 V/ 40 VA. Easy to install: screw down or threaded clamp to electrical box, simple to wire up; Please note: the brand names above is only for demonstrating compatibility;.
BrandMaxdot #ad
ManufacturerMaxdot #ad
Height3.35 Inches
Length4.13 Inches
Weight1.7 Pounds
Width2.95 Inches

2. WUYELIN

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

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WUYELIN #ad - Easy to install:output with screw terminals, You can freely cut the connecting cable and arrange the cable according to the length you need to make the installation simple and beautiful.

Compatible with: this transformer compatible for honeywell, Ecobee, and Sensi smart thermostats; Also compatible with Video Doorbell, Video Doorbell 2, Nest, Video Doorbell Pro, Nest Skybell Doorbell. Specification: input voltage: 120 vac, 40va safe and stable auto-resetting PTC fused secondary, 60hz; output voltage: 24v, LED green power indicator. Doorbell/thermostat power solution: 24vac 40va wall transformer, can provide sufficient power for your thermostat and doorbell, using this Transformer to replace and upgrade the insufficient power transformer, save the trouble of frequent battery replacement.
BrandWUYELIN #ad
ManufacturerWUYELIN #ad
Height2.1 Inches
Length3.8 Inches
Width2.5 Inches

3. Packard

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40V/24V, Packard, PF42440 Control Transformer Class Ii Foot Mount, PACKARD

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Packard #ad - Product depth in. Mounting Configuration: 2 Foot. Wire length 8". Primary voltage: 120/208/2401. 65lb. Product weight lb. Secondary Voltage: 24. 4. 1 product Height in. 2. 8 product Width in. 2. 7. Va rating: 40 Ul listed.
BrandPackard #ad
ManufacturerPACKARD INC. #ad
Height1 Inches
Length1 Inches
Weight1 Pounds
Width0.5 Inches
Part NumberPACKARD - PF42440
ModelPACKARD - PF42440

4. Fiada

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Primary 120, 240V Secondary 24V, 208, HVAC Furnace Multi Tap, Control Transformer 40VA

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Fiada #ad - Product dimensions: 3. 7 x 2 x 2. 2 inches, foot mount. Specification: 40VA volt amp rating. Primary voltage: 120, 208, 240V; Secondary voltage: 24V. Wide compatibility: this transformer is designed for use in industrial, heating and air conditioning controls, air conditioning circuits, including thermostats, relays, and gas valves or other applications that do not exceed the listed ratings. Ul certified and safe use: UL certified, class 2 transformer.
BrandFiada #ad
ManufacturerFiada #ad
Height1 Inches
Length1 Inches
Width1 Inches
Part Number1
Model1
Warranty1

5. Endurance Pro

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

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Endurance Pro #ad - 24v 40va fits nest, ring video doorbell pro, ecobee, ring video Doorbell, Honeywell, Sensi smart Thermostats, ring video doorbell 2, Nest Skybell Doorbell and more. This supplyedge product is ul/csa approved to assure safe operation and long life. Easy to install: screw down and thread clamps to electrical box. Superior quality you can trust! This SupplyEdge Products is UL/CSA approved to assure safe operation and long life. Warranty- this part sold by SupplyEdge come with a 1 year, no questions asked, no hassle warranty. Powers thermostats and doorbells: replace underpowered transformers.
BrandEndurance Pro #ad
ManufacturerEndurance Pro #ad
Height2.75 Inches
Length3.5 Inches
Weight1.57 Pounds
Width2.25 Inches
Part Number6080-079
ModelEP4011MT: 6080-079

6. VIIVRIA

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24V 40VA Power Supply Compatible With Honeywell, Sensi And Ecobee Thermostat, Thermostat / Doorbell Transformer, Nest, Doorbell Transformer For Nest Hello And All Versions Of Ring Doorbells

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VIIVRIA #ad - 180 days money-back guarantee 3. Viivria has a professional team which has been specialized in designing and manufacturing transformers for a few years, improving technologies to meet consumers' needs. Allows more stable charging connection for 2-3 devices at the same time.

Or any other devices that require constant 24V power for operation. Xx type pure copper wire has a small difference in conductivity and more stable current, which is 10% more wire usage than common inverters. High-quality accessory 2. Doorbell transformer - it's compatible with ring video doorbell, ring video Doorbell 2, Ring Video Doorbell Pro, Zmodo Smart Greet Wi-Fi Video Doorbell and Nest Hello Doorbell, etc. Professional customer service. What you get- 1. Perfect Honeywell 24v transformer.

Multiple usages - a device you could use for both doorbells and transformers, 24 Volt transformer can be also used for multiple thermostats and doorbells, offering plenty of power for single or multiple devices 2-3 at the same time. More stable connection - greater power connection, higher load and longer service life of products. Thermostat transformer - a perfect device to operating Honeywell Smart WiFi Thermostat, Sensi Thermostat, Ecobee Thermostat, and Nest Thermostat.
BrandVIIVRIA #ad
ManufacturerZKRFID #ad
Height1.89 Inches
Length3.54 Inches
Width2.44 Inches

7. Newhouse Hardware

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Newhouse Hardware 40TR 24-Volt 40vA Wired Door Bell Transformer for Powering Multiple Smart Doorbells and Thermostats, Gold

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Newhouse Hardware #ad - Quick and easy installation: simply mount to electrical box via threaded connector or screw down. Ul certified. Backed by a 2 year manufacturer. Eliminate issues caused by underpowered transformers: a lack of power, connection issues, low quality video resolution, and low chime volume may be an indicator of an underpowered transformer.

Input voltage: 120 vac, 60hz | output voltage: 24 Vac at 40VA. Brands mentioned for compatibility information only. Compatible with ring video doorbell pro, Zmodo Smart Greet Wi-Fi Doorbell, nest hello, Sky Bell Doorbell, Nest thermostats, and more.24vac/40va doorbell transformer for powering single or multiple doorbells and thermostats. Thermal cut-off switch offers an extra layer of safety, shutting off power in the event of excessive temperature.
BrandNewhouse Hardware #ad
ManufacturerNewhouse Hardware #ad
Height2.5 Inches
Length2 Inches
Width2.5 Inches
Part Number40TR
Model40TR
Warranty2 year warranty against manufacturer defects

8. WUYELIN

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Ecobee And Sensi Thermostat, Honeywell, 24V 40VA Thermostat And Doorbell Transformer, Nest Hello And All Versions Of Doorbells, Power transformer Compatible With Nest

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WUYELIN #ad - Compatible with: this transformer compatible for honeywell, video Doorbell Pro, nest skybell Doorbell, Ecobee, Nest, Video Doorbell 2, and Sensi smart thermostats; Also compatible with Video Doorbell, and other devices that require constant 24 volt power for operation. Multiple functions: transformer for both doorbell and thermostat, Can be used for multiple thermostats and doorbells, providing sufficient power for single or multiple devices 2-3 at the same time. Easy to install:screw down or threaded clamp to electrical box.
BrandWUYELIN #ad
Manufacturershenzhen yelinda #ad

9. Maxdot

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Power Supply Compatible with Nest, Sensi and Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell Style 2, Ecobee, Thermostat and Doorbell Transformer 24V 40VA

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Maxdot #ad - Easy to install: screw down or threaded clamp to electrical box, simple to wire up; Please note: the brand names above is only for demonstrating compatibility;. Power up multiple thermostats / doorbells: replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for single or multiple thermostats and doorbells at the same time.

Universal compatibility: this 24v transformer fits for nest, ecobee, ring video doorbell Pro, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Nest Skybell Doorbell, Ring Video Doorbell 2, and other devices that require constant 24 volt power for operation. Ul certified and safe use: this 24 volt transformer is UL-certified, offers reliable performance. Specification: input is 120 v/ ac, 60 hZ; Output: 24 V/ 40 VA.
BrandMaxdot #ad
ManufacturerMaxdot #ad

10. CINCHDONE

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

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CINCHDONE #ad - Easy to install: screw down or threaded clamp to electrical box, simple to wire up; Please note: the brand names above is only for demonstrating compatibility.

Specification: input is 120 v/ ac, 60 hZ; Output: 24 V/ 40 VA. Power up multiple thermostats / doorbells: Replaces and upgrades underpowered transformer with this 24V AC transformer, offering plenty of power for single or multiple thermostats and doorbells at the same time. Eco-friendly: Eco-friendlyzinc plating technology, no pollution. Universal compatibility: this 24v transformer fits for nest, nest skybell Doorbell, ecobee, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Ring Video Doorbell Pro, Ring Video Doorbell 2, and other devices that require constant 24 volt power for operation.
BrandCINCHDONE #ad
ManufacturerCINCHDONE #ad