Johnson Controls A419 Electronic Temperature Control Combines keypad programming with a liquid crystal display (LCD) to provide greater built-in control versatility. A large display screen lets users check between setpoint and temperature at a glance, and a bright LED also makes it easy to see relay status. Even with these convenient features, the A419 is the most compact electronic temperature control currently available. The A419 features a single-stage temperature control with a single-pole, double-throw (SPDT) output relay, which makes it ideal for use with refrigeration and HVAC equipment, including frozen and refrigerated food cases, beverage coolers, and pump and boiler...
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