Johnson Controls A421ABJ-02C

The Johnson Controls A421ABJ-02C is an electronic single-stage temperature control designed for precise HVAC temperature management in commercial and residential systems. This unit operates on 120/240 VAC, features SPDT outputs, UL Type 1 enclosure, and IP20 protection for indoor use.

It includes a single piggy-back cord and a 2m (6'-6") temperature sensor with a wide -40 F to 212 F operating range to ensure accurate monitoring across seasonal changes.

• 120/240 VAC operation for versatile power compatibility
• SPDT switching for reliable control of heating and cooling circuits
• UL Type 1 enclosure with IP20 protection for indoor installations
• Single piggy-back cord for straightforward wiring
• 2m (6'-6") temperature sensor with -40 F to 212 F range

Designed for reliable performance in HVAC control panels, this Johnson Controls controller helps simplify installation and maintenance while delivering consistent temperature control.