STC-8080A+ Digital Temperature Controller for Refrigeration with Defrost Function & Alarm, for Cold Room, Commercial Freezer, STC-8080A+ 220V

1. Two-way relay output for cooling and defrosting; manual defrosting function is enabled when the defrosting time setting is not zero.
2. High-precision sensor: High-precision chip resistant to 3000 high and low-temperature cycles, with low drift and more stable performance.
3. Passed lightning surge and voltage dip tests, ensuring reliable operation in harsh environments (such as remote mountainous areas with unstable voltage, production workshops with complex electromagnetic environments, etc.).
4. Temperature over-limit alarm deviation value is adjustable within 0~50 degrees Celsius, meeting diverse user needs.
5. Proportional on/off control: When the sensor fails, the controller controls the compressor to operate proportionally, effectively avoiding the risk of temperature runaway after sensor failure.
6. Upper and lower limit temperature control: User parameters and administrator parameters are set separately, with upper and lower limit restrictions on user-set parameters to prevent improper parameter settings due to misoperation, thus avoiding product loss.

Parameters:
1. Measurement range: -50~99 degrees Celsius
2. Control range: -40~50 degrees Celsius
3. Temperature measurement accuracy: +/-1 degree Celsius
4. Temperature resolution: 1 degree Celsius
5. Sensor: NTC sensor
6. Power supply voltage: 220VAC 50-60Hz
7. Resolution: 0.1 degree Celsius
8. Fault delay: 1 minute
9. Ambient humidity: 20%-85%
10. Housing material: ABS flame-retardant plastic
11. Installation dimensions: 71 x 29mm