Best Digital Temperature Controllers in 2026

🥇🥇【Easy to use】 Supports °C/°F display.

🥇🥇【Dual relay】able to power refrigeration and heating equipment as conditions change.

🥇🥇【Dual Display Window】Displays measured temperature and set temperature at the same time.

✓ EFFORTLESS COOLING SETUP: Simply place the probe, plug-in the thermostat controller, and use the large 3-button interface to choose your desired temperature setting. Digital display supports units in both Fahrenheit and Celsius. Note: the controller is designed to have a 2-3 degree buffering zone before powering on again after reaching set temperature.

✓ EASE OF MIND: Handy LED cooling and power indicator lights allow you to see the controller’s status even in total darkness. Controller features a convenient hanging tab, and a bright, easy-to-read display inside a tough plastic housing.

✓ RUGGED CONSTRUCTION: The cord for the temperature probe and grounded 3-prong plug measure an extended 6-feet in length, designed to suit almost any application you can imagine.

It does indeed read in deg F.

Can control both heating and cooling output

Has an alarm to indicate sensor failure or high temperature

🏆🏆【Excellent Value for Money】Dual Probes, Dual Outlets, Dual Zones Control, it's a Dual Controllers in ONE Unit. More than DOUBLE the functionality of other thermostats!

🍺🍺【Incredibly Easy Setup】Just need to set outlet 1 turn ON at A temp point, turn OFF at B temp point, and set outlet 2 turn ON at C temp point, turn OFF at D temp point, then outlet 1 will control temp in the range of A~B, and outlet 2 will control temp in the range of C~D.

🔥💦【Flexible Heating/Cooling】Heating+Coloing, Heating+Heating, Cooling+Heating, Cooling+Cooling, any combination as you want.

A digital controller designed to equip AC Infinity devices with smart controls to produce the optimal environment.

Control up to four devices from fans to grow lights and provide each with their own independent programming.

Automate devices to dynamically change speed and brightness levels in response to temperature, humidity, and VPD.

100% complete machine patch, wave soldering, stable performance, good consistency.

Embedded CPU chip (MCU), more intelligent, lower power consumption.

Automatic power set memory (MCU built-in EEPROM memory unit).

【Output】2 Relays, control the temperature by setting the temperature set value and the difference value.

【Mode】Automatic switch between cooling and heating modes, Fahrenheit and Celsius display can be choose.

【Calibration】Temperature calibrating, refrigerating control output delay protection.

🐊【Ideal Temperature Control】The temperature controller can regulate and maintain your preferred temperature within a control range from -40~248ºF. The temperature controlled outlet comes with a sensor probe to reliably track the temperature.

🍻【Plug-and-Play】The thermostat outlet is easy to use 3 buttons to set up temperature between Fahrenheit/Celsius according to your using habit.

🌱【Convenient Design】With illuminated LED display, the greenhouse thermostat is easy to read and program even in darkness. And you can hang the temperature controller on the wall or hooks to keep cords untangled and neat.

♦ Dual Display: This PID temperature controller has dual display for Fahrenheit (F) and Celsius(C). The AGPtEK temperature controller supports reading with Centigrade or Fahrenheit unit.

♦ PID Control: Individually programmable PID control parameters, P, I, d, controlling period, digital filter coefficient, and more… (for control theory experts only)

♦ Dual Output: 7 different Dual Output combinations with 1 relayed output and 1 SSR control voltage output.

Auto converts cooling and heating modes to keep your equipments in an ideal temperature range.

DIY design use wiring diagram, the more economical and practical choice

The temperature sensor from Shibaura Japan,temperature control range from -50℃ to 99℃, accuracy:±1℃

Equipped with dual LED display, it is more suitable for the device with water circulation. If the unit does not have water circulation, please purchase itc-100 series

Offers display options of Centigrade and Fahrenheit

Enabling more humanized temperature control

🙌🙌【Plug-n-Play Easy Operation】The electric home brewing controller is an all-in-one machine and no more installation is needed. Just plug in and set up the system according to your needs.

🙌🙌【Precise Control】PID digital controller provides accurate temperature control at the range of -50~125℃/ -58~257℉, and the accuracy of the temperature is ±0.1℃ or ±0.2℉.

🙌🙌【Independent Pump Function】The Pump Function is special designed for home brewing customers and it can be operated separately, just access your pump and press the “Pump” button when you need it.

DROK electronic thermostat controller power supply is DC 6-30V or 5V micro USB; control load current is 10A (Max); test temperature is -50~110℃; sensor length is 0.5 meter.

High current: Our digital temperature control board adopts high density PC board installation technology, the switch capacity can be up to 10A in spite of the small size.

LCD display: Designed with bright LCD display, people can check the temperature clearly from any angle.

LCD Screen Display: This solar panel charger controller with LCD digital screen which is with energy-saving backlight to display all parameters, display better, more clea and more power-efficient

Fully Automatic: This solar panel regulator with output switch, easy to operate. The battery indicator light on the controller will be on if successfully connected

Power-efficient: Microcontroller digital accuracy, when solar panel regulator is charging, the arrow between the panel icon and the battery icon will flash fastly, when the battery was a full charge, it will be slow flashed, will stop charging. The function of the solar charge controller is to protect the voltage overshoot and discharge. Available for DC lamp and phone charging (Please correctly connect the positive and negative terminals, makes sure all terminals are connected tightly.)

This PID temperature controller can read TEMPS in Fahrenheit (F) and Celsius(C) . You can choose Centigrade or Fahrenheit unit . Power-off memory function

TC/RTD universal input , such as K , J , E , Pt100 etc. SSR solid state relay output .

Dual LED Display , Dual Output: 7 different Dual Output combinations with 1 relayed output and 1 SSR control voltage output.

【2m Waterproof probe】Digital temperature controller 110V can be used in moisture and water environment, you can use it in home brewing, fridge, pet breeding, reptile, tank, incubation, fermentation, seedling heat mat, accelerating germination.

【Keep temperaure in desired range and guaranteed accuracy】It's on/off control mode. Turn on your device at a degree and turn it off at another degree. Fully utilize the stc microcontroller and NTC probe to have this temperature regulator has great accuracy: ±1°F, Temperature control range: -58~212°F, Power consumption: ≤3W, Power Supply: 110VAC 50Hz/60Hz. Output: 2 Relays, Cooling (10A/110-220VAC) / Heating (10A/110-220VAC).

【Wirring heater and cooler at the same time】No more frequently change wirring between heater and cooler. This temperature regulator has 2 relays. Compared with other 1 relay temperature controllers, you can wire 2 appliances (heater and cooler) at the same time. (Please kindly note no outlets, wirring needed).

High quality ;Mini and light weight design; large and clear LCD display.

Auto converts cooling and heating modes to keep your equipment in an ideal temperature range. .Have 2 relays .Switch between cooling and heating modes. Support celsius display.

Wide temperature range (-50-99 °C); dual heating and cooling function.

【Plug and Play】 No other accessories required. 2 Pre-wired cooling and heating outlets, simple 3-button and 2.5" large LCD screen design make the temperature regulator easy to use. Note: Not WIFI version No APP

【Ideal Temperature Control】 No matter summer or winter, it could save your money! The temp controller auto switches between heating and cooling TWO devices or auto turn on/off one device. Wide temperature control range: -40 ~230 ℉/-40~110℃, high accuracy ±2℉/±1℃.

【Multifunctional for Your DIY Project】 Personalized parameters can be set, including ℃/℉, high and low alarms, temperature calibration, start-up delay, protection time (cooling mode only) and etc., to meet the different needs of users.

【Overview:】Diymore SHT2000 AC 110~230V10A temperature and humidity controller, just make your life more convenient.

【Heating Mode:】Start value < stop value (program automatically determines working mode is heating/humidifying mode). For example, controlling the water heater, heat to 65℃ to stop, the temperature drops back to 50℃and start heating again

【Cooling Mode:】Start value > stop value (the program automatically determines the working mode is cooling/dehumidifying mode). For example, using in the farm, the fan is ventilated to 26℃to stop, the temperature is raised to 30℃ and the ventilation is started again

Product name: Temperature Controller MV100-B10 ;Product name: solid state module relay SSR-25DA, 3-32VDC/24-380VAC; Product name: K-Type Thermocouple Sensor Dia: 6mm ,Cable Length: 2m(6.6ft).

Special note: After the temperature controller is turned on, the default is degree Fahrenheit；Digital Display PID : Support reading with Centigrade or Fahrenheit unit （factory default to Fahrenheit unit）; be able to display measured and Controller temperature ；Display Character: PV: 4 digital 9.9mm height Red LED Letters；SV: 4 digital 8mm height Green LED Letters；

Controller Front Panel Dimension: DIN 48mm(W)X48mm(L) ; Mounting hole size: DIN 45mm(W)X45mm(L) ；Total size ：DIN 48mm(W)X48mm(L)X74mm(H);

What will receive: you will get 2 pieces of direct-current 12V 200 mA temperature controllers, the measurement temperature is from -50 to 110℃(-58 to 230℉), the control and backlash precision: 0.1 Celsius, the refresh rate: 0.5 s, the module size: 48 x 29 x 32 mm/ 1.89 x 1.14 x 1.26 inch, the probe length: 1.5 inches, the cable probe length: 1 ft

Dual color LED display: this digital thermostat control module of dual color LED display, which show the measured temperature (red) and set temperature (blue) at the same time, which can be applied for cooling/ heating mode, you can test indoor or outdoor temperature

Waterproof design: the NTC (10K 0.5%) probe is waterproof, and you can control the temperature at will, can also control heating or cooling according to different needs

✹✹ The W1209 thermostat module controller has a sensor input, keys, LED display, and a relay. It can be reprogrammed for control, timing, or counting.

✹✹ Temperature Measurement Range: -50~110℃. Control Precision: 0.1 celsius.Input Power (DC): 12V; Measuring Inputs: NTC (10K 0.5%) ; Waterproof Sensor: 0.5M; Output: 1 Channel Relay Output, Capacity: 10A; Power Consumption: Static Current: 35mA; Current: 65mA.

✹✹ Electronic digital thermostat with a 3-digit LED display, extremely bright. Operation both in heating and cooling to easily control equipment and devices.

2 Working modes: this digital LED temperature controller module has 2 working modes, heating mode (start temperature is lower than stop temperature) and cooling mode (start temperature is higher than stop temperature), range from -50°C to 110°C; The high temperature control accuracy reaches 0.1℃

Stable and reliable: the LED indicator light can display the current output status; The digital display tube can display the measured temperature, and the temperature measurement and control accuracy is high

Durable material: this XH-W3001 digital thermostat switch is made of ABS, one of the five major synthetic resins, which is non-toxic, strong impact resistance, heat and low temperature resistance

This delicate digital display temperature controller can set Celsius mode or Fahrenheit mode.

The ambient and set temperature preciseness is 0.1℃. It is convenient to install and wiring is simple.

Wide temperature measurement range from -50℃ to 110℃ and supports high temperature protection.

√ ● Dual display for Fahrenheit(F) and Celsius(C)，Range: -1999 to 9999 (depends on the input signal)

√ ● Input: Thermo Resistor: PT100, Cu50，Thermocouple: K,Wre3 ~ Wre25 ， Main Output: SSR: Open circuit: 4V, Closed Circuit: 24V 40mA DC

√ ● K type thermocouple Temperature rang:0-800℃, Sensor Dia: 4.5mm, Cable Length: 2m

【Wide temperature range.】The range for KT8230 is -22~572℉, 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℉) 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 calibrate the temperature when there is error.

【Alarm Output】With one alarm relay output: AC220V/DC30V 3A (Resistive load) ON/NC, you may connect it with a buzzer.

【Supports 2 Wires Sensors】2 wires sensor, like K type thermocouple , is supported by this PID temperature controller

【SSR Output】With one relay output for external SSR, SSR or relay is a must for this temperature controller. A 40DA SSR is included

✅Working voltage: DC 5V-36V, continuous current: 15A, power: 400W, strengthen heat dissipation conditions, the maximum current can reach 30A

✅Working temperature: -40-85℃; size: 1.34x0.7x0.5inch/3.4 x 1.7 x1.2cm (length * width * height)

✅Using imported dual MOS parallel active output, lower internal resistance, higher current, strong power, continuous current 15A at normal temperature, power: 400W, meets most equipment use, and easily realizes the control of high-power equipment

XH-W3001/℉ digital LED screen temperature controller has two working modes, heating mode (when the temperature is lower than the stop heating temperature) and cooling mode (when the temperature is higher than the stop cooling temperature), power supply AC110~220V/1500W, wide temperature measurement range:- 58℉~248℉; High temperature control accuracy.

Waterproof probe: equipped with 1m stainless steel NTC10K probe, waterproof and not easy to rust, easy to use, no need to plug, durable. Equipped with power cord quick connector, the wiring is simple, safe and beautiful.

Stable and reliable: LED indicator can display the current output status.Digital display tube can display the measured temperature, and high-precision temperature measurement and control. Easy to understand, only Fahrenheit supported.

Digital CO2 monitor and controller

Once the CO2 level has reached your desired set point it will disable the CO2 device

It features a photocell to ensure 'daytime only' dosing of CO2 via a generator or regulator