Temperature Control Mini Thermostat ETC-974 Refrigerator Regulator Controller

The ETC-974 temperature controller is a dual-input device built for monitoring and regulating temperature in refrigeration and defrost systems. It features a compact plastic housing with a switchable digital readout and accommodates two separate sensing elements. 1. Measurement and Accuracy: The standard probe tracks temperatures from -50 to 110 degrees Celsius, while the PTC probe operates within -55 to 140 degrees Celsius. The display resolution switches between 1 degree and 0.1 degree increments, with precision rated at ±0.5 degrees Celsius between -30 and 50 degrees Celsius. 2. Electrical Configuration: Operating on 230VAC power at 50 or 60Hz, the controller accepts two sensor inputs and provides relay outputs rated at 8A/220VAC to manage refrigeration, defrost, and fan circuits. 3. Physical Dimensions and Included Components: Constructed from black and red plastic, the unit measures 77 by 34.5 by 58 millimeters. The package includes one main controller module, one standard probe, and one PTC probe, each with a cable length of 2 meters. 4. Operational and Storage Conditions: The controller functions effectively at ambient temperatures between -5 and 55 degrees Celsius in environments with 10% to 90% non-condensing humidity, and safely stores within a range of -30 to 85 degrees Celsius.