STC-200 temp controller offers a single output relay to control the power supply of a refrigerator or a heater or an external alarm unit.

STC-200+ Electric Temperature Controller (Refrigeration / Heating / Alarm)

MOQ: 100 USD

Features of the digital thermostat STC-200+ are as follows:

  • Could be the audible/visible temperature alarm monitor for refrigerator, exhaust, serve room, greenhouse;
  • 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 exists parameters, resume all data once power back, need not configure it again;
  • Adjustable Temperature Hysteresis, Compressor Delay Time, and Temperature Calibration;
  • Alarm once the room temperature exceeds the measurable range or sensor error;
  • Alarm by buzzer screaming and error code on display.

Front Panel of STC-200+ temperature controller

blank   blank blank

STC-200+ Controller Wiring Diagram


STC-200+ Function Menu

F0Temperature Return Difference/Hysteresis1163°C
F1Protection Delay Time for Refrigerator093Min
F2Lower Limit for SP Setting-50F3-20°C
F3Upper Limit for SP SettingF29920°C
F4Refrigeration or Heating or Alarm Mode131
F5Temperature Calibration-550°C

How to set the target temperature range?

The temperature range was defined from "SP" to "SP + Difference (Hysteresis)" in this unit.

  • SP means the Temperature SetPoint; it is the lower limits in this controller;
  • The "SP + Hysteresis" result is the upper limits (Hysteresis is a unidirectional parameter here).
  • From SP to "SP + Hysteresis" is the range user wishes temperature to keep around; once exceeds this range, the status of the load will change; 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 F2 and F3 are limited;
    • It will back to normal status in the 30s if without operation.

How to configure the other parameters of STC200+?

  1. Hold the "SET" and the "Up"  keys for 4s simultaneously to enter the function code interface; you will see F0.
  2. Press the "UP" or "DOWN" keys to select the code you want to update;
  3. Press the "SET" button to check the existing value;
  4. Press the "UP" or "DOWN" keys to adjust data;
  5. Press the "SET" key again to the function menu, and the configured value is saved.

More Tips:

  • Repeat Step 2 / 3 / 4 to adjust other parameters;
  • Press "SET" for 3s to save data and back to normal monitor status.

How to take it as the refrigerator temperature monitor and alarm?

  • Set the F4= 3;
  • The external alert will be triggered once found the room temperature crosses the safe range (SP+Hysteresis and SP);
  • As a room temperature monitor system with a built-in alarm and external alarm supportable, it is suitable for both the freezer room and the warm room; but it will not control the refrigerator or the heater;
  • It could be used as the exhaust temperature monitor/alarm unit for aquarium/fish tank water, chest/upright freezer, server room, spa room, smoking room, wine cellar, etc.

STC-200+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-200+ User Manual Download

Share to Unlock Contentimage/svg+xml
Unlock this exclusive content by using one of the sharing buttons below.

More Tips:

  • This Instruction is based on the Elitech STC 200+ temperature controller;
  • the same products with a similar package from other suppliers should be consistent but not guaranteed to be 100% the same.


FAQ of Haswill Compact Panel Thermostat

  1. How to get the price?
    Click the inquiry button, and finish the form, you will get a reply in 24 hours.
  2. Celsius VS Fahrenheit
    All of our digital temperature controllers default in Celsius degree, part of them available in Fahrenheit with MOQ.
  3. Parameter Comparison
    Compact panel digital temperature controllers tables
  4. Package
    The common package could load 100 PCS / CTN digital temperature controllers.
  5. Accessories
    We suggest you buy 5% ~ 10% spare parts like clips and sensors as stock.
  6. Warranty
    Default one-year (extendable) quality warranty to all our controllers, we will offer free-of-charge7. replacement if found a quality defect.
  7. Custom-Made temperature controller
    If you can not find suitable temperature controllers from this website, please contact us for a custom-made service, the MOQ is usually from 1000PCS.

more questions? Click FAQs

MOQ: 100 USD