Engine Order Telegraph System is a micro controller based ‘sate of the art electronic device. This is independent system operating with 24 VDC supply.

Operation and command execution:
Once up and running , the operation of this series of order telegraph is pretty simple. The command is initiated by depressing the desired push button . The corresponding display window on all the connected units starts flashing and audio alarm is initiated at the slave unit. The flashing display become steady and the audio alarm stop on acknowledgement from the slave unit when the same command push button is depressed at the slave unit. The procedure is repeated for subsequent commands.
AIETEL series are one way mode and AITEL (T) is two way mode telegraph.
Two way mode telegraph, both side communication is possible. Master can send command to slave and slave can send back information to master.
One way mode telegraph, master can communicate to the slave. Slave can only acknowledge the command.