is a heavy-duty single-pole double-throw (SPDT) thermostat engineered for industrial and marine cooling applications

Built for the rugged demands of residential and light commercial hydronic systems

providing the necessary phase shift for single-phase motor efficiency

this ZA2494H3 model features a 3W/2W power rating

Belimo EXT-OP-5502-250 Sensor R-22 is a heavy-duty single-pole double-throwThe Belimo EXT OP 5502 250 is a precision engineered Carbon Monoxide (CO) sensor designed for demanding commercial HVAC applications, specifically targeted at indoor air quality (IAQ) monitoring in parking garages and mechanical spaces. This duct mounted CO sensor utilizes an advanced electrochemical sensing element to provide high accuracy ppm readings, ensuring reliable integration with Building Automation Systems (BAS) via a standard 2 10V or 4