PURPOSE: To carry out the fire extinguishing work by spraying water immediately and lighten the water loss by opening and closing a water flow detector through the remote operation, as for a tester for a peroperation type sprinkler type fire extinguishing device.

CONSTITUTION: A manual opening operation switch 136 for outputting an opening signal for opening a preoperation type water flow detector 60 and a manual closing operation switch 137 for outputting a closing signal for closing the preoperation type water flow detector are installed on a manual operating valve control panel 87.