For HVAC blower shaft replacement

For multi-stage heating

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

Designed as a critical component for Utica and Dunkirk boilers

Belimo EXT-OP-5502-250 Sensor R-22 For HVAC blower shaft replacementThe 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