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
Price: $19.99
(as of Oct 26, 2025 16:51:23 UTC – Details)
This 24 V transformer fits for Nest, Ecobee, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell Doorbell, and other devices that require constant 24 volt power for operation 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 (4011MT)
Powers thermostats and doorbells: replace underpowered transformers
Easy to install: screw down and thread clamps to electrical box
This 24 volt transformer is UL-certified, offers reliable performance
Input is 120 VAC, 60 Hz; Output: 24 V/ 40 VA
This 24v transformer fits for Nest, Ecobee, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell Doorbell, and other devices that require constant 24 volt power for operation
Product Dimensions : 3.1 x 2.3 x 4.8 inches; 1.68 Pounds
Item model number : BJ-4011-24V
Date First Available : October 22, 2020
Manufacturer : BOJACK
ASIN : B08LNVXL2R
Best Sellers Rank: #18,650 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #12 in Door Bell Transformers
Customer Reviews: 4.5 4.5 out of 5 stars 458 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Powers thermostats and doorbells: replace underpowered transformers
Input :120 VAC, 60 Hz; Output: 24 V/ 40 VA
This 24 Volt transformer is UL-certified, offers reliable performance
Easy to install: screw down and thread clamps to electrical box
This 24 V transformer fits for Nest, Ecobee, Honeywell and Sensi smart thermostats; Also compatible with Ring Video Doorbell, Ring Video Doorbell 2, Ring Video Doorbell Pro, Nest Skybell Doorbell, and other devices that require constant 24 volt power for operation
Customers say
Customers find the transformer works well with Ring Pro doorbells and other applications, and appreciate its solid construction and straightforward installation process. The product receives positive feedback for its power level, with one customer noting it can handle new camera doorbells. However, the voltage output receives mixed reviews, and durability is a concern as one customer reports it burned out after 6 weeks of use.
