| 摘要 |
PROBLEM TO BE SOLVED: To provide an earthquake sensing device which can easily be wired and assembled into an existing distribution board for a household use, etc. SOLUTION: A relay circuit or the like which operates when sensing the vibration of an earthquake is assembled into a casing 11 with a space for one or two safety circuit breakers, A power terminal 13 is placed on one side of the casing 11, and an alarm terminal 14 on the opposite side to facilitate wiring during assembly into a distribution board. Electronic boards 14, 15 inside the casing 11 are provided in a number of stages and are electrically connected together by conductive pins to make high-density mounting possible. |
