Johnson Controls A421AET-01C

Johnson Controls A421AET-01C is a reliable electronic single-stage temperature control designed for 120/240 VAC systems. This unit combines precise sensing with rugged protection, delivering dependable performance in demanding environments.

Featuring UL Type 4x and IP66-rated enclosure, SPDT switching, a built-in cycle timer, and a 0.25 m (9") temperature sensor, it covers a wide operating range from -40°F to 212°F.

Designed for commercial refrigeration, processing equipment, and climate control systems, this controller simplifies integration and reduces setup time. The unit is engineered for durability in challenging environments, delivering consistent performance across temperature and humidity variations.

• Electronic single-stage temperature control for precise HVAC and industrial cooling on 120/240 VAC systems.
• Rugged enclosure with UL Type 4x and IP66 protection for wet, dusty, or outdoor installations.
• SPDT output provides flexible wiring to relays, contactors, or sequencing devices.
• Integrated cycle timer enables programmable on/off control for energy efficiency.
• Built-in 0.25 m (9") temperature sensor with a range of -40°F to 212°F for accurate sensing.