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We design and manufacture GSM based Annunciator with advance technology microcontroller used to send the message along with window Annunciation when the fault occurs (Trip) in the system or in the process. It is the high integration of digital trip inputs converting to messages by using GSM modem. Short messages will be sent to the pre specified mobile numbers with Station name, feeder no., window no., description, unit Sl no, Date & Time of Trip/ Close. It is more useful in the process industries at hazardous area where more attention is required.