INTRODUCTION The DTMF Controller Interface, or DCI1 for short, was designed to meet the needs of the home automation experimenter. The easy hookup interface and simple operational control lends itself well for a variety of applications. The DCI1 continually monitors your phone line (or just about any other DTMF audio source) and looks for the proper user programmed security code. Once it is heard, the user may select which of the 4 trigger relays to turn on or off. Feedback tones from the DCI1 are then sent back over the line to confirm your selection. No more wondering if your commands are carried out as is commonly found with other similar devices!
Now you can call home and, when your answering machine picks up, control lights, security systems, or just about any number of other custom applications! The DCI1 is a slim line unit with four 5 Amp (1250VA AC/150W DC) relay outputs, each with its own sure grip screw terminal. It requires a 12 to 15 VDC 300 mA (positive tip) power source for operation; our standard AC125 110 VAC power adapter works well. A matching case & knob set is also available to make your kit look more professional and attractive in any setting (not to mention cover up any potentially hazardous voltages you may be switching). Note: The DCI1 does not answer or seize control of your phone line or other audio source.
An answering machine or similar device is needed to retain control on a phone line. The DCI1 simply “listens” to the line. DCI1 4