Hotop 24 Volt C Wire Adapter for Smart Thermostat, UL Listed 16.5ft Long Power Connector C Wire for All Versions of Smart Thermostat Compatible with Nest/Honeywell/Ecobee/Wyze
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Availability:
In Stock.
Arrives
Thursday, Sep 18
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Features
- Widely Use: Hotop C wire adapter for smart thermostats compatible with Nest/Ecobee/Honeywell/Wyze/Hive, smart thermostat, etc., and other devices that require constant 24 volt power for operation, enables you to charge your devices safety
- Easy To Install: 2 pin non polarity wires support easy and quick install, assemble along the wall from your outlet to the thermostat without the wiring; Our cable is 5 m (16.5ft) long and you do not worry about the distance between the socket and the smart thermostat; This allows you to easily plug it into an electrical outlet inside or outside your house
- Certificated Safety Nest Thermostat Power Supply: Hotop C wire adapter for smart thermostat is UL listed and has built in 2A thermal fuse short circuit protection, prevent short circuit, overvoltage, overcurrent, overheat, ensure charging safety
- Safe and Convenient: a quick fix to the problem of "Low battery" you can charge it directly (plug adapter into outlet and power up); That means you don't need to remove your thermostat in order to charge up the battery; With an output of 24V/300mA, a nice tool to meet your needs
- What You Will Get: 1 pcs 24 Volt C wire adapter for smart thermostats, 1 bag (50 pieces) of cable clips, enough to meet your daily use
Brand: Hotop
Power Source: Corded Electric
Current Rating: 0.3 Amps
Specification Met: UL
Item Weight: 0.03 Pounds
UPC: 615068644914
Manufacturer: Hotop
Item Weight: 0.48 ounces
Package Dimensions: 3.58 x 3.58 x 2.83 inches
Is Discontinued By Manufacturer: No
Color: White
Voltage: 110 Volts, 120 Volts, 24 Volts
Batteries Included?: No
Batteries Required?: No
Date First Available: January 14, 2019
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, Sep 18
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Positive Review for an Excellent Product: “I am absolutely thrilled with this product! It exceeded all my expectations. The quality is top-notch, and it works exactly as promised. It’s easy to use, durable, and provides great results. I’ve been using it for a while now and have seen a noticeable difference. I’m so happy with my purchase and would highly recommend it to anyone looking for a reliable and high-quality product!”
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Reviewed in the United States on January 18, 2025 by FANNY
Works great! It is easy to hookup . Th cable is long enough to reach a plug in
Reviewed in the United States on March 10, 2025 by HPK
This transformer is like aspirin! It arrived quickly, and was easy to hook up. It’s been plugged in and powering my thermostat for several months now, without a single issue. I bought a smart wifi thermostat to replace my older thermostat that didn’t need a C wire. Ohh... I can’t tell you how frustrating this was. I had the C wire, but it wasn’t plugged into anything. Being that I’m not an electrician I didn’t want to blow up my furnace or a/c, or new thermostat by connecting the C wire to the wrong thing. HEADACHE!! So I looked for a safer fix, and found this. I read the review that suggested that this burned up someone else’s thermostat, so I was concerned. But, I’ve realized that that person obviously plugged the live/positive wire into the wrong spot, or possibly with the negative wire. As someone else instructed; One wire goes in the R slot with the red wire and the other goes in the C slot. If you aren’t sure which wire is positive please use a voltage meter to check before hooking it up. If the wires are marked: wire with the stripe or the dashed lines carries the "positive" (+) end, while the other, unmarked wire carries the "negative" (-) end. Positive should go to the C wire place on the thermostat. If you don’t do this properly you can create a fire hazard, but it’s not this product’s fault.
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Reviewed in the United States on March 9, 2020 by Jim and Chris
3/13/2025: With the help of previous reviewers, I was able to figure out the correct way to install this for my Nest Learning Thermostat (3rd Gen). For reference, my A/C system has a gas furnace (forced air) and electric cooling. Initially, only four wires were available: W, Y, G, and R with a little jumper wire to Rc. To remedy this with the C adaptor, I connected W, Y, and G to the same terminals BUT I ended up connecting the white wire (with the gray stripes) to C and the R wire ALONG WITH the white wire (with wording and numbers) to the Rc terminal. Since our original thermostat didn't have an Rh wire, I didn't bother to connect it to that. While this works really well now and I'm happy I bought it, the installation instructions were terrible and definitely kind of useless. I'm appreciative of the previous reviewers for their help.
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Reviewed in the United States on March 13, 2025 by Victoria
This is working very well for my Honeywell wifi thermostat (specifically RH6580WF). All I had to do was remove the jumper on my new thermostat, connect the red and white thermostat wire to R and W, then this power adapter to C and Rc (Rc is no longer jumped to R) and it started right up. This saved me a LOT of hassle and a LOT of money! The wire was nice and easy to run work with to run up through the wall from my basement so I didn't have to have the power supply out on display. Only thing I would like to see changed is that the stripped end of the wire is a bit too long, even after I cut the end in half! Would have also been nice if it wasn't hard wired to the power adapter as running the cable down the wall instead of up would have been even easier (I ended up just bunching the wire at the bottom of the wall from the basement, using a hook on the end of a fiberglass wire fishing kit -- took about 4 tries and a few minutes to snag the wire and pull it up)
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Reviewed in the United States on February 1, 2020 by JF
The wires on this device are so thin and flimsy, I do not feel safe running electricity through them 24 hours a day. I’ve never seen such cheap, thin, crappy wires. If they were thin but strong, it would be fine, but these look and feel like tinsel. This is going right back. I wish there was some name brand version of this device, but every one is some unknown name. I can’t believe this item has an over 4-star rating with how cheaply-made it is.
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Reviewed in the United States on July 12, 2025 by JudieK
Working great on my Google thermostats without C wires
Reviewed in the United States on March 11, 2025 by Behzad Mahaseny
Transformer delivers as rated, but, the 300ma power delivery is inadequate to trigger a typical AC relay. When placed under NEST Gen 3 load, NEST could not recognize equipment on the air handler end. Need a transformer rated at least 500ma output to trigger AC relay. Will replace ASAP.
Reviewed in the United States on July 24, 2025 by Bigshot