Ranco ETC-212100-000 Control

The Ranco ETC-212100-000 is an industrial-grade two-stage digital temperature control designed for precise thermal management in commercial refrigeration and HVAC systems. Built for 24V AC low-voltage applications, this microprocessor-based unit features a wide setpoint range from -30°F to 220°F, making it a versatile choice for everything from walk-in freezers to space heating. The 0-10V analog output provides a linear voltage signal proportional to the sensed temperature, allowing for seamless integration into Building Automation Systems (BAS) or remote monitoring setups. With dual SPDT relay outputs, contractors can independently configure each stage for heating or cooling, providing critical two-stage compressor control or automatic changeover functionality.

Engineered for technical reliability, the controller includes a NEMA 1 enclosure and a high-visibility backlit LCD that displays real-time sensor data and relay status. The Ranco ETC series serves as a high-performance digital electronic thermostat replacement for standard electromechanical controls, offering tighten differential settings from 1°F to 30°F for superior energy efficiency. The unit is equipped with non-volatile EEPROM memory to retain all programmed parameters during power loss and a keypad lockout feature to prevent unauthorized field adjustments.

• Dual-Stage Versatility: Direct control of two independent stages with SPDT switching for complex heating and cooling sequences.
• Remote Monitoring: Onboard 0-10V output enables remote temperature tracking without extra transducers.
• Accurate Diagnostics: Real-time LCD readouts and integrated error codes simplify troubleshooting in the field.
• Flexible Installation: Sensor leads can be extended up to 400 feet using standard 22 AWG wire for remote sensing applications.
• Robust Memory: EEPROM technology ensures settings are preserved without the need for battery backup.

Can this unit replace a Honeywell T775 series?
Yes, the ETC-212100-000 is a common replacement for multi-stage controls like the T775M2048, provided the 24V power and staged output requirements match the application.

How does the 0-10V analog output function?
This signal is a linear representation of the temperature range; 0V corresponds to -30°F while 10V corresponds to 220°F, ideal for PLC inputs or tracking systems.

What happens if the sensor fails?
The controller includes onboard diagnostics that will display specific error codes (such as E1 or E2) to indicate an open or shorted sensor circuit, preventing system runaway.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.