Sentinel System
Hotline Telephone system
Brief description
Hot-line Telephony System is useful for various people working in the remote site. A two phone intercom is developed and is being used extensively during the high lift platform jobs for conversations with the testing team at the ground level. The major advantage of this set up is that it is tested to be RFI-free. The maximum operating range between the two receiver is 1 K.M.
Circuit Diagram
Images
