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The proprietary Soft Touch seat design reduces torque requirements
the adjustable sensitivity—ranging from 1/4 to 4 psi per 1% RH—allows for the fine-tuning required for stable pneumatic calibration
High-Torque Performance: Provides 180 in-lb (20 Nm) of constant torque
a reduced pressure zone (RPZ) assembly is required by most codes
Johnson Controls A19AAA-49 Utility Thermostat 320720-756 The proprietary Soft Touch seatThe Johnson Controls A19AAA 49 Utility Thermostat is a technician grade single pole, single throw (SPST) control designed for heavy duty HVAC R applications. Engineered to open on temperature drop, this low limit control is essential for preventing freeze ups in refrigeration systems and maintaining setpoint integrity in walk in coolers and industrial storage units. It features a wide temperature range of 30F to 100F ( 34C to 38C), making it a