DTMF control RELAY SWITCHING circuit using M8870, 4013, BC548

DTMF control RELAY SWITCHING circuit using M8870, 4013, BC548
Published 04/10/2010 & Filed in ELECTRONIC CIRCUIT. Part 1
Tags: 4013, BC548, DTMF control, DTMF Decoder, DTMF-8 Plus, home automation, M8870, RELAY SWITCHING circuit, Remote Control Relay Board, repeater operations, rotor control, video camera switching