Johnson Controls A19AAB-40 Remote Bulb Temperature Control

The Johnson Controls A19AAB-40 Remote Bulb Temperature Control is a dependable temperature control device designed to regulate heating and cooling equipment with precision. It works by using a remote sensing bulb to monitor temperature changes and automatically open or close electrical contacts to maintain the desired setting. Commonly used in HVAC systems, refrigeration equipment, unit heaters, and air handling applications, it provides accurate temperature regulation, improves energy efficiency, enhances system reliability, protects equipment from temperature fluctuations, and supports consistent indoor comfort and dependable operation.