Description
The Johnson Controls A421AEC-01C 1-Stage Electronic Temperature Control 120/240V, IP66 / NEMA 4X Rated, is a line-voltage digital controller to regulate temperature in heating or cooling applications. It operates on and uses a relay output to switch connected equipment based on programmed temperature setpoints. The unit features a digital LCD interface for configuration and monitoring, along with adjustable parameters such as differential, setpoint range, and anti-short-cycle delay. It is commonly used in refrigeration systems, HVAC system, walk-in coolers, freezers, and other industrial temperature-controlled environments.
