manual call point การใช้

The term " fire detection and fire alarm systems " is a fairly wide definition, including small systems whose field devices consist only of sounders and manual call points, to complex networked systems with a large number of automatic fire detectors, manual call points and sounders, connected to numerous networked control and indicating panels.
The term " fire detection and fire alarm systems " is a fairly wide definition, including small systems whose field devices consist only of sounders and manual call points, to complex networked systems with a large number of automatic fire detectors, manual call points and sounders, connected to numerous networked control and indicating panels.
Such systems typically operate a similar structure to a standard wired fire alarm network, in that Manual Call Points may be mixed with automatic fire detection in the form of heat detection and smoke detection ( often specially designed to be dust resistant, due to the increased likelihood of dust on a construction site ) and can be connected to a monitoring base station unit.