We design and manufacture Alarm Annunciator – input form PLC (RS 485 input) with Microcontroller based advance technology. This type of Annunciation system is useful in process control panels/ PLC panels to eliminate control cable wires and accept input from Program logic controller by only twisted two wires on RS 485 (Modus protocol). It saves cable cost, labour and also solve loose contact issues. This unit increases the reliability of the system.

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