Feature

    ☆ Compatible with GST conventional and addressablegas release
         control panel
    ☆ Self-latched buttons, reset by special tool
    ☆ Spare contact output for start signal
    ☆ To avoid mis-operation, the start and stop buttons areprotected
         by a glass cover. When fire occurs, break theglass cover to
         press corresponding button. The brokenglass should be
         replaced in time.