Top 10 Best keezer temperature controller in 2026

Last Updated - 6/9/2026

🏆Best Choice

Inkbird

Inkbird ITC-308 Digital Temperature Controller 2-Stage Outlet Thermostat Heating and Cooling Mode Carboy Homebrew Fermenter Greenhouse Terrarium 110V 10A

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Convenient Design: Plug and play, easy to use; Support Celsius or Fahrenheit reading
•Dual Relay Output: Support to connect with refrigeration and heating equipment at the same time
•Dual Display Windows: You can view the measured temperature and set temperature at the same time
•High and low-temperature: Buzzer alarms when the temperature reaches preset temps
•Maximum output load: 1100 W (110 V)
•Calibration and Compressor Delay: It comes with temperature calibration and compressor delay which can protect your refrigeration

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$35.00

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BN-LINK

BN-LINK Digital Cooling Thermostat Controller, Temperature Controlled Outlet for Attic Fan, Exhaust Fan, Cooling Devices 40-108°F, 8.3A 1000W

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•EFFORTLESS COOLING SETUP: Simply place the probe, plug in digital temperature controller, and use the large 3-button interface on this thermostat controller to choose your desired temperature. Digital display supports units in both Fahrenheit and Celsius.
•EASE OF MIND: Handy LED cooling and power indicator lights allow you to see the controller’s status even in total darkness. BN-LINK cooling thermostat features a convenient hanging tab, and a bright, easy-to-read display inside a tough plastic housing
•RUGGED CONSTRUCTION: This attic fan thermostat outlet plug features a sensor probe for easy and accurate temperature monitoring. Comes with 3.94 ft 3 prong power cord and 4.92 ft temperature probe for extended reach and flexibility.
•VERSATILE APPLICATIONS: This cooling thermostat switch maintains temperature within a control range of 40–108°F. Ideal for use with attic fan, exhaust fan, swamp cooler, perfect for greenhouse, garage, attic, brewing, fermentation, chicken coop, breeding and more.
•SAFE & RELIABLE: Our temperature controlled outlet is ETL listed, and rigorously tested for quality control and safety. Rated Voltage is 120VAC 60Hz, Max Loading: 8.3A 1000W. Please Note: This temperature switch is only used with cooling devices.

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$18.99

$20.99

-10%

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WILLHI

WILLHI WH2408 Temperature Controller 10A 1200W, Digital Thermostat Controlled Outlet Plug Switch for Reptile Terrarium Greenhouse Homebrew Aquarium Seedling Mat, Heating or Cooling Mode Thermometer

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•【Effortless Setup with Intuitive Design】 : WILLHI digital temperature-controlled outlet switch simplifies settings with two knobs for on/off temperature adjustments—no complicated menus. It provides precision within -58°F to 230°F (-50°C to 110°C), making it an ideal thermostat plug for various applications. By memorizing settings during power outages, it minimizes disruption, saves energy, and reduces setup time, providing a hassle-free user experience.
•【Versatile Applications】: Designed for reptile tanks, terrarium heat lamps, aquariums, aquarium heaters, seedling heating mats, greenhouses, incubators, attic fans, chicken croops and smokehouses, WILLHI aquarium thermometer controller is also perfect for home brewing, sous vide cooking, fermentation, meat curing, and mushroom growing. The included food-grade probe can be used directly in food preparation. The thermostat's ambient temperature range is -4°F to 140°F (-20°C to 60°C). The probe's measuring temperature range is -58°F to 230°F (-50°C to 110°C). Length of the probe tip is approx 1-1/2 inches (4.2cm).
•【Robust and Safe Construction】: Made with a fire-retardant ABS shell, WILLHI digital temperature controller ensures safety and durability with built-in power isolation to guard against electrical hazards.The shell is not waterproof, though its probe is. Please keep the device dry.
•【Customizable and Reliable Features】: Offers heating and cooling modes, adjustable brightness, and both Fahrenheit and Celsius options. Its resettable fuse, ETL-certified power cord, and premium relay provide dependable performance, making it a standout thermostat plug.
•【Powerful Performance with Patent-Pending Design】: WILLHI WH2408 digital temperature-controlled outlet switch is rated for up to 1200W (120V), with a 0.1°F control resolution for precise adjustments. Its innovative design is currently patent pending, setting a new standard for thermometer controllers.

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$27.97

$39.99

-30%

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Inkbird

Inkbird PID Temperature Controller Kit, High Voltage 100ACV to 240ACV, Comes with SSR 40DA Solid State Relay, K Type Thermocouple, and White Heat Sink

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Alarm Output: With 1 alarm relay output, AC250 V, 3 A (Resistive load), ON or NC, you can wire a buzzer
•Supports 3-Wire Sensor: a 3-wire sensor or 2-wire sensor, like the K type thermocouple and Cu500, is supported by this PID temperature controller
•SSR Output: With 1 relay output for external SSR, an SSR or relay is a must for this temperature controller; A 40DA SSR is included
•Digital Display Celsius or Fahrenheit: It’s a digital PID controller but also supports Centigrade or Fahrenheit reading
•2 Temp Displaying Windows: The real-time temperature and the setpoint are shown at the same time

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$39.99

$45.99

-13%

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WILLHI

WILLHI WH1436A 10A Temperature Controller 110V Digital Thermostat Switch Sous Vide Controller NTC 10K Sensor Improved Version

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•WE'VE IMPROVED THE TEMP CONTROLLER: This is NOT a humidity controller! Simplified operation, larger power, wider control range, standard U.S. outlet, enhanced waterproof sensor probe. Get the new version right now. NO WIFI connection!
•HEATING OR REFRIGERATION WORKING MODE: Switch between heating mode and refrigeration mode according to the settings and device you plug into the controller. NO wifi connection!
•MAX LOAD: Rated for 10A,1100W at 110V. Outlet not compatible with 2 hot lines 220V plug (Celsius or Fahrenheit Read-out).
•PLUG AND PLAY: Insert the probe and then set ON & OFF temp. This temperature regulator will turn your device on/off as programmed to keep temperature between the desired range. Comes with a 3m(9.8ft) probe sensor. Measure range is -58 ~ 230°F(-50 ~ 110°C). The thermostat's ambient temperature range is -40°F to 176°F (-40°C to 80°C).
•WIDE APPLICATIONS: Our thermostat outlet is widly used for seedling germination, home brewing, fermertation, rooting, sous vide, incubation, pet breeding, aquarium, heaters or cooling devices such as heat mat/lamp, refrigerator/frezzer....

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$32.99

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Inkbird

Inkbird Temp Control Thermostat ITC1000 Dual Stage Digital Temperature Switch Controller ℃ ℉ Display Heating Cooling Relay NTC Sensor 3D Printer Freezer Fridge Hatching 110 Volt

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•It does indeed read in deg F
•Can control both heating and cooling output
•Has an alarm to indicate sensor failure or high temperature
•Highly accurate and reliable temperature controller
•Be more user friendly than the STC-1000

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$17.88

$19.99

-11%

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Inkbird

Inkbird ITC308 Freezer Thermostat Heating Cooling Plug Temperature Controller Outlet 110V 1200W Digital Temp Control for Greenhouse Heater Cooler Reptile Brewing Fermentation Kegerator Probe

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Simple to use: plug it in, set the temp ranges, place the probe, plug in the heater/cooler into the marked outlet
•Be able to connect with refrigeration and heating equipment at the same time
•Easily calibrated
•Can display in Centigrade or Fahrenheit
•Whether you need temperature control for fermentation, greenhouse, kombucha control or to set up your temperature project system, the ITC-308 temperature controller is a great choice

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$35.99

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Inkbird

Inkbird ITC-308 Digital Temperature Controller Outlet Thermostat 2-Stage 1100W with Sensor Reptile Beer Brewing Kegs Fridge Cured Meat Breeding Growing

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Plug and play design, easy to use
•Dual relay output, be able to connect with refrigeration and heating equipment at the same time
•Support reading with Centigrade or Fahrenheit unit
•Maximum output load: 1100W(110V)
•Dual display window, be able to display measured temperature and set temperature at the same time

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$35.00

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Ranco

Prtst RANCO ETC-111000-000 Electric Temperature Control

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Genuine OEM replacement part
•Ranco provides equipment to the commercial foodservice industry and is dedicated to quality designs
•Uses OEM parts for safety, reliability, and performance
•Approved by original equipment manufacturer (OEM)
•Not intended for anything other than specified designed usage

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$89.00

$107.72

-17%

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KETOTEK

KETOTEK KT8230 Digital Temperature Controller Thermostat Regulator 120VAC 30A Fahrenheit -22~572℉ Heating Cooling for Incubator Brooder Refrigerator Fermenter Greenhouse Reptile

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•【Wide temperature range.】The range for KT8230 is -22~572℉/-30~300℃,This is a relay temperature controller, There is no voltage output directly, you need to connect additional power supply for the load, then it can be set by differential (1~80℃/1~120℉) to turn on/off the load, it is like a switch.
•【Output is 30A relay, more accurate.】The temperature controller 120V can be used for big power equipment, like incubator, brooder, refrigerator,Fermenter,Greenhouse,etc. 1°F accuracy to keep the temperature in desired range.
•【Support delay start function and temperature correction.】The cooler and heater will delay to work if you set the delay time(PL: 0~7min) not 0, You can set depend on what you need. -30.0°F～30.0°F/ -7℃~7℃ calibrate the temperature when there is error.
•【Safe protection.】Temperature Regulator will alarm when it exceed temperature limit or sensor error, alert you when something wrong happened. You can also set the low(LS) and high temperature limit(HS) to change the temperature range, LS < Setting Temperature < HS.
•【Simple operation.】 All parameters setting can be saved after restart, you don’t need to set the thermostat regulator when power off, or restart it from vacation. 2m NTC sensor allows more possibility for home

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$28.98

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