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KING K902-W Hoot WiFi Line Voltage Smart Programmable Thermostat, 120/208/240V, Double Pole, 4-Wire, White


Price: $99.98
(as of Jun 15, 2025 23:43:13 UTC – Details)


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Customers say

Customers find the thermostat works well and appreciate its temperature control features, with one mentioning it maintains a constant temperature throughout the day. The device is easy to install. However, several customers report issues with WiFi connectivity, particularly with 2.4 GHz networks.

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9 customers mention "Functionality"8 positive1 negative

Customers find that the thermostat works well, with one customer specifically mentioning that it runs their heater perfectly.

"…] This thermostat works perfect for my bathroom, i have it connected to a 120v, but is easy to connect if…" Read more
"…It worked fine for about a week, maybe two. Then the heat just wouldn't shut off…." Read more
"…App does the job but is a little basic. What more should it do? Maybe power usage? Better graphics?…" Read more
"…This was ready to install and worked well." Read more
5 customers mention "Ease of installation"5 positive0 negative

Customers find the thermostat easy to install, with one mentioning it comes with instructions.

"…It comes with instructions, just follow the steps 🙂…" Read more
"…in not too long, and the added comfort in the space makes the studio work go easier." Read more
"…This was ready to install and worked well." Read more
"…automatically whenever the need arises, stays connected, is easy to program, runs my heater perfectly, etc., etc. Just perfect. Flawless…." Read more
4 customers mention "Temperature control"4 positive0 negative

Customers appreciate the thermostat's temperature control features, with one mentioning it maintains a constant temperature throughout the day, while another notes its ability to start baseboard heaters.

"…By establishing Hoot-timed temperature settings, the studio begins to warm before I enter in the morning, and maintains a constant temperature all…" Read more
"…These thermostats (I have several) allow me to start the baseboard heaters the day before arrival to bring the temperature from the mid 30’s to 60…." Read more
"Air electrical heater for bathroom…" Read more
"Great WiFi thermostat…." Read more
5 customers mention "Wifi connectivity"0 positive5 negative

Customers report issues with the thermostat's WiFi connectivity, mentioning that it doesn't connect to 2.4 GHz networks and that the connection process is tricky.

"…to a 120v, but is easy to connect if you have 240v, the wifi connection is a little tricky but if you follow the instructions step-by-step you will…" Read more
"…First issue- Doesn't connect to 2.4 Ghz wifi as stated…." Read more
"…One will not let me connect to my WiFi Another one worked for one day and now no Control buttons work ( even the reset one)…" Read more
"Works as advertised, but you should be aware it only connects to WiFi 2.4. If you don’t have a network that allows a 2.4 connection, you can’t use it." Read more





Flawlessly Excellent Smart Thermostat

5 out of 5 stars

Flawlessly Excellent Smart Thermostat
I can't rave about this smart thermostat enough. It is expensive, but works flawlessly. I was corresponding with tech support for another smart thermostat company for 2 months and still never got it to connect to my system, where this connect immediately, reconnects automatically whenever the need arises, stays connected, is easy to program, runs my heater perfectly, etc., etc. Just perfect. Flawless. I'm one extremely satisfied customer. EDIT/UPDATE 3/27/2022: I just went through my first New Hampshire winter with this device. I am even MORE pleased as a result. Completely consistent and flawless performance. Kept my outdoor shed exactly where I wanted it at all times. Was able to make adjustments from afar. Love it without reservation.
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Top reviews from the United States



  • Manny

    5.0 out of 5 stars

    Air electrical heater for bathroom

    Reviewed in the United States on December 21, 2024

    Color: WhiteSize: Double Pole (4-Wire)Verified Purchase



    The media could not be loaded.

    This thermostat works perfect for my bathroom, i have it connected to a 120v, but is easy to connect if you have 240v, the wifi connection is a little tricky but if you follow the instructions step-by-step you will be able to success, wifi only works with 2.4ghz
    Fortunately i have both choices, i tried others but i decided to stay with this Model # K902-W
    It comes with instructions, just follow the steps
    🙂


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  • maz

    1.0 out of 5 stars

    run away heat

    Reviewed in the United States on February 23, 2025

    Color: WhiteSize: Single Pole (3-Wire)Verified Purchase

    So I had the heater wired by an electrician then added this later to be able to control the heat remotely. It worked fine for about a week, maybe two. Then the heat just wouldn't shut off. We have it in a house we rent during the summer but keep it open all winter and wanted to keep the basement from dropping below freezing. Long story short, I couldn't get the unit to drop and it was above 75 degrees and climbing over a two day period. I had to make the 4 hour trip to disconnect the unit. I haven't been able to troubleshoot as of yet.


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  • Happy Customer

    5.0 out of 5 stars

    Great WiFi thermostat.

    Reviewed in the United States on March 19, 2025

    Color: WhiteSize: Single Pole (3-Wire)Verified Purchase

    Screen is very responsive but it does some interesting things when you press on it. App does the job but is a little basic. What more should it do? Maybe power usage? Better graphics? Ultimately it absolutely does the job but at that price point I would like to see a little more polish. Just my 2 cents. Still 5 stars.


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  • Sandra Alexandre

    1.0 out of 5 stars

    Doesn't work properly. A real headache.

    Reviewed in the United States on January 6, 2025

    Color: WhiteSize: Double Pole (4-Wire)Verified Purchase

    Purchased 3 of these for a rental property.
    First issue- Doesn't connect to 2.4 Ghz wifi as stated. My internet company tech support told me that it was the device that had a issue connecting, not their service. All other devices would connect to 2.4 GHz without a issue.
    Second issue- Device would constantly freeze where the touchscreen did not work. Had to constantly turn off the breaker to get it to operate again.
    Third issue- Only 30 day return policy. By the time you order it to get it professionally installed, the 30 days is past and you can't return. Stuck with a devices that doesn't work. I am out almost $500 since I ordered three.
    Fourth issue- contacted company and no response back. They don't care they sold lemons.


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  • neilsson

    5.0 out of 5 stars

    Upped the temerature game considerably

    Reviewed in the United States on December 19, 2024

    Color: BlackSize: Double Pole (4-Wire)Verified Purchase

    I installed this to control my 240v 1ph heater over a month ago in our ceramics and woodworking studio. The switch on my Cadet heater is somewhat thermostatically controlled, but never was able to maintain a constant temperature in the space, especially a problem in the morning after a significant nighttime cold snap. By establishing Hoot-timed temperature settings, the studio begins to warm before I enter in the morning, and maintains a constant temperature all throughout the day, and lowers the temperature in the evening– saving electrical cost through the night. No more constant messing with the Cadet control switch. Any skepticism I had has disappeared. The cost reduction of electrical energy will, I'm sure, pay for this in not too long, and the added comfort in the space makes the studio work go easier.


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  • Jim Stirling

    1.0 out of 5 stars

    WiFi won’t connect!

    Reviewed in the United States on November 10, 2024

    Color: WhiteSize: Double Pole (4-Wire)Verified Purchase

    Installed for about a month but could never get it to connect to WiFi. As a plain old thermostat, it’s fine. It does the job. But I paid a lot more because I wanted to be able to monitor the temp remotely sincerely the heaters it powers are in our primary bedroom. I thought it might just be out of range but it’s only one floor down and every other device, (Roku, phones, tablets) connects without fail and we have plenty more bandwidth to go around. Even made sure we set the router to connect to it on the right frequency. Nothing. And now we’re stuck with it because I’m not about to play around with it on my own but I’m also not calling an electrician to come back out.


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  • Gybbster

    5.0 out of 5 stars

    Works well.

    Reviewed in the United States on October 29, 2024

    Color: WhiteSize: Double Pole (4-Wire)Verified Purchase

    Needed a wireless controller for a heater in a bathroom cabin to be able to monitor temp and make sure it didn't freeze. This was ready to install and worked well.


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  • M. H. Tritter

    5.0 out of 5 stars

    Flawlessly Excellent Smart Thermostat

    Reviewed in the United States on September 12, 2021

    Color: BlackSize: Double Pole (4-Wire)Verified Purchase

    I can't rave about this smart thermostat enough. It is expensive, but works flawlessly. I was corresponding with tech support for another smart thermostat company for 2 months and still never got it to connect to my system, where this connect immediately, reconnects automatically whenever the need arises, stays connected, is easy to program, runs my heater perfectly, etc., etc.
    Just perfect. Flawless. I'm one extremely satisfied customer.
    EDIT/UPDATE 3/27/2022: I just went through my first New Hampshire winter with this device. I am even MORE pleased as a result. Completely consistent and flawless performance. Kept my outdoor shed exactly where I wanted it at all times. Was able to make adjustments from afar. Love it without reservation.

    Customer image


    M. H. Tritter

    5.0 out of 5 stars

    Flawlessly Excellent Smart Thermostat

    Reviewed in the United States on September 12, 2021


    I can't rave about this smart thermostat enough. It is expensive, but works flawlessly. I was corresponding with tech support for another smart thermostat company for 2 months and still never got it to connect to my system, where this connect immediately, reconnects automatically whenever the need arises, stays connected, is easy to program, runs my heater perfectly, etc., etc.
    Just perfect. Flawless. I'm one extremely satisfied customer.
    EDIT/UPDATE 3/27/2022: I just went through my first New Hampshire winter with this device. I am even MORE pleased as a result. Completely consistent and flawless performance. Kept my outdoor shed exactly where I wanted it at all times. Was able to make adjustments from afar. Love it without reservation.

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    Customer imageCustomer image

    5 people found this helpful

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Product Summary: KING K902-W Hoot WiFi Line Voltage Smart Programmable Thermostat, 120/208/240V, Double Pole, 4-Wire, White

From KING
Double Pole Line Voltage 4-Wire Installation
Programmable With Hoot Smart Phone App
Large LCD Touchscreen Display
Multi-Volt Rated 120/208/240V
Over-The-Air (OTA) Firmware Upgradeable
Temperature Range 41º – 90ºF (5º – 32ºC)
User Defined Max Temperature Lock
Program 4 or 6 Time Periods Per Day For Maximum Flexibility
Electronic Sensing With Thermistor For Accurate Temperature Control (±1ºF)
For Use On Baseboard, Fan Forced & Radiant Electric Heaters

Customers say

Customers find the thermostat works well and appreciate its temperature control features, with one mentioning it maintains a constant temperature throughout the day. The device is easy to install. However, several customers report issues with WiFi connectivity, particularly with 2.4 GHz networks.

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