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What is the difference between a non-spring return and a spring return actuator for this model
it meets strict UL 1585 and CSA standards
reliable power protection is non-negotiable
the 025-46044-006 sensor is the serviceable probe component within those larger kits
Dwyer Instruments 1638-10 Pressure Switch 320074-702 What is the difference betweenThe Dwyer Instruments 1638 10 Pressure Switch is the commercial standard for high precision monitoring of air and non combustible gases. Engineered with a large diaphragm, this Series 1630 switch provides the low range accuracy required for critical HVAC duct air control and damper positioning applications. It operates within a 3" w. c. to 12" w. c. range with a 0. 11 0. 30 approximate deadband, ensuring a reliable differential pressure response