... alarm and temperature & humidity control.Since all kind of switchgear status indications, language alarming and T/H automatic control are ... Model SGC-03T apply for many kinds of switchgear, for example, handcart switchgear, fixed switchgear. Product Functions in Details:-CB status indication² ... is stretched, prompt CB spring is in open status.-HV Energized IndicationIndicating A,B,C which one or all ...