Designed for maximum conductivity

it ensures precise millivolt output

This SPNO pressure switch (Single Pole Normally Open) is engineered to monitor vacuum or positive pressure levels

hard starts where the compressor hums but fails to turn over

Siemens Building Technology ASC77.2U Kit 322056-301 Designed for maximum conductivityThe Siemens ASC77. 2U is a field installable external dual auxiliary switch kit designed for seamless integration with GIB, GBB, and GCA series OpenAir actuators. Engineered for precision positioning, this double auxiliary switch allows technicians to monitor actuator stroke and signal external equipment at predetermined rotation angles. With a heavy duty 24V to 250V AC DC switching capacity, the ASC77. 2U is essential for interlocking fans, dampers,