STC-100A Refrigeration or Heating Digital Thermostat

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China STC-100A Compact Panel Thermostat - wholesale price, user manual, troubleshooting, wiring diagram, Setting guide video, and alternatives

STC-100A is a smart digital temperature controller with 1 output relay to control the power supply of a refrigerator or a heater.

Minimum order Amount: 200 USD

Features of the digital thermostat STC-100A are as follows:

  • The temperature set-point and hysteresis determine the target temperature range and separately high and low limits to the Temperature Set-point available;
  • Embed NVM to auto memory existing parameters, resume all data once power back, need not configure it again;
  • Adjustable Temperature Hysteresis, Compressor Delay Time and Temperature Calibration;
  • Alarm by error code on display (without buzzer inside);
  • Alarm once the sensor temperature is over the measurable range or sensor error.

Front Panel of STC-100A temperature controller

Wiring Diagram of STC 100A temperature controller

STC100A Function Menu

HCRefrigeration or Heating ModeCHC
DTemperature Hysteresis / Return Difference1155°C
LSLower Limit for SP Setting-40SP-40°C
HSUpper Limit for SP SettingSP9970°C
CATemperature Calibration = Real Temp. - Measured Temp.-770°C
PTProtection Delay Time for Load (no matter refrigeration or heating mode)071Min

How do you set the target temperature range? The range was defined from “SP” to “SP + Difference” in this unit.

  • SP means the Temperature SetPoint, and it is the lower limit in this controller;
  • [SP + Hysteresis] is the upper limit (Hysteresis is a unidirectional parameter here).
  • From SP to [SP + Hysteresis] is the range the user wishes temperature to keep around, once exceeds this range the status of the load will be changed, follow the below steps to set it:
    • Press the “SET” key, which shows the SP value;
    • Press the “UP” and “DOWN” keys to change SP, which LS and HS limited;
    • It will back to normal status in the 4s if without operation.

How do we configure the other parameters?

  1. Hold the  “SET” key for 4s to enter the function code interface, and you will see HC. H means heating only thermostat mode, and C means cooling thermostat mode.
  2. Press the “UP” or “DOWN” keys to select the code you want to update;
  3. Press the “SET” to see the existing value; Hold the “SET” key and do not release it, meanwhile, press the “UP” or “DOWN” keys to change data;
  4. Release all keys, and then press the “UP” or “DOWN” key to the next code;

More Tips:

  • Repeat Steps 3 / 4 to adjust other parameters;
  • All new data will be auto-saved, and it will back to normal status in 4s if without operation.
Most errors could be solved by replacing a new sensor, please find more solutions from the below user manual.

STC-100A Controller Trouble Shoot and Error Code

  • E1:The memory unit is broken
  • EE: thermistor error
  • HH: detected temperature > 99°C
  • LL: detected temperature < -50°C
Most errors could be solved by replacing a new sensor, please find more solutions from the below user manual.

STC-100A temperature controller User Manual Download

Please be aware that the English page only displays the English version of the user manual, please switch to the corresponding language page to download the PDF manual in other languages.
This User Manual is based on Elitech STC-100A and should also be workable with the same controller from Eko, Kamtech.


FAQ of Haswill Compact Panel Thermostat

  1. How to avoid buying Inferior temperature controllers?
    here is a simple method, that does not require professional knowledge.
  2. How to get the price?
    Click the inquiry button, and finish the form, You will get a reply in a few hours.
  3. Celsius VS Fahrenheit; and Voltage
    All of our digital temperature controllers default in Celsius degrees, and part of them is available in Fahrenheit with different minimum order quantities;
    Besides the 220V AC (±15%), these electronic temperature controllers also are available in 110V AC, 12V DC, and 24V DC (110 / 24 /12 Volts ).
  4. Parameter Comparison
    Catalog of Compact panel digital temperature controllers
  5. Package
    The standard package could load 100 PCS / CTN digital temperature controllers.
  6. Accessories
    We suggest you buy 5% ~ 10% spare parts like clips and sensors as stock.
  7. Warranty
    Default one-year (extendable) quality warranty to all our controllers, We will offer a free-of-charge replacement if found a quality defect.
  8. Customization Service
    If you can not find a suitable temperature controller on this website, We will help you develop it based on our existing mature products ;
    Thanks to China's complete set of related industry chains, our customized thermostats are of high quality and low price;
    the MOQ is usually from 1000 pieces. don't hesitate to contact us for customization services.

or more questions? Click FAQs

Minimum order Amount: 200 USD


Regarding the voltage of this electronic temperature controller

  • 220V AC (±15%) as the default, Without MOQ (minimum order quantity) requirement;
  • 110V AC (±15%) with MOQ 200 PCS;
  • 12V DC with MOQ 200 PCS;
  • 24V DC Without MOQ requirement;

As one of the distributors of Elitech, Haswill Electronics offers the Original Elitech Brand version at a competitive price.

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