Instruction manual
DCI1 • 4
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.