Apparatus and instruments for monitoring, inspecting, and regulating electrical devices for measurement and control of fans and Air Handling Units, electrical control panels, thermostats, and heat regulating devices, namely, electrical devices for measurement and control of fans and Air Handling Units; electric and electronic apparatus and instruments for controlling ventilation installations, exhaustion installations, and heat recovery installations; measuring instruments for measuring tempe...

Apparatus and instruments for monitoring, checking (supervision), regulating electrical devices, electrical control panels, thermostats and heat regulating devices; electric and electronic apparatus and instruments for controlling ventilation installations, exhaustion installations, and heat recovery installations; measuring instruments for measuring temperature, air humidity, particles and CO2-level; fire protection installations, namely, fire guards, fire gas fans, smoke fans, fire and smok...

chimney fans