GAS CUT-OFF DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a gas cut-off device provided with a battery storage configuration that can change battery capacity according to the presence/absence of a communicating function. SOLUTION: The gas cut-off device comprises a flow measuring means 17 for measuring gas flow; a gas cut-off valve 2c cutting off a gas passage in an abnormal time; an information storage means 10b storing various information based on the measured result of the flow measuring means 17; a radio module 11 transmitting/receiving information to/from a plurality of object destinations; and a communication switching means 10c switching the communication frequency band according to the object destination. The radio module 11 is integrally mounted in a detachable manner to a control circuit board 10 constituting the flow measuring means 17 to form a battery storage configuration that can change battery capacity between the case of mounting the radio module 11 and the case of not mounting the radio module 11. COPYRIGHT: (C)2008,JPO&INPIT