Johnson Controls A19AAC-9C Electromechanical Temperature Control

Johnson Controls A19AAC-9C Electromechanical Temperature Control is a precision SPDT NEMA 1 remote bulb temperature control designed for HVAC systems. It operates across a 100/240°F range, with a fixed 6°F differential and a 6-foot cap, delivering dependable, accurate temperature signaling in tight spaces.

Built for reliability in busy mechanical rooms, this electromechanical thermostat combines rugged construction with easy maintenance. The SPDT switching lets you tailor heating or cooling control, while the NEMA 1 enclosure protects the electronics from dust and debris in indoor environments. Remote bulb sensing ensures readings stay true even when heat sources or dampers are nearby.

• SPDT switching provides versatile control for heating or cooling cycles in commercial HVAC
• NEMA 1 enclosure protects internal electronics from dust, debris, and moisture in indoor spaces
• Remote bulb temperature sensing ensures accurate readings away from heat sources
• Temperature range: 100–240°F with a fixed 6°F differential for stable control
• Fixed 6' cap length allows flexible probe placement and easy installation