Patent ID: 6896066

Claim:
A sprinkler apparatus comprising a heater operable by temperature sensing means, a thermal fuse melting by heat from the heater, and a valve plate for opening an extinguishing liquid discharging nozzle of a sprinkler head in response to the melting of the thermal fuse to discharge extinguishing liquid, wherein the sprinkler apparatus further comprises: a sprinkler head controller including a transmitter and a receiver, the sprinkler head controller performing a self-diagnostic operation according to an algorithm contained therein in such a manner that it supplies a small amount of current to the heater and detects the amount of current flowing through the heater and externally transmitting the self-diagnostic result and a temperature value sensed by the temperature sensing means; and a main computer installed in a central control station for informing an operator of the self-diagnostic result and temperature value transmitted from the sprinkler head controller.