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The FMR-224
is a crystal controlled single channel receiver,
comprising of receiving, decoding and relay-output
sections. A specially designed LARGE SCALE INTEGRATED
CIRCUIT (LSI) is employed in the decoder section, which
ensures operation at low supply voltage, highest
reliability, associated with very low power drain.
The
receiver works on a digitally encoded 27 MHz frequency
modulated (FM) signal. It may be used in applications such
as the remote control of garage doors, gates, lights,
alarms or in any other new or existing installations where
the use of conventional wiring is difficult or impossible
to accomplish.
If the code
of the input signal (from a transmitter) matches the
setting of the coding switch on the receiver (up to 4096
combinations), an output is obtained i.e. the relay
operates. This relay provides a clean set of contacts for
switching DC current up to 5 Amps.
Connection
to the receiver is via a six-way screw-type terminal
block.
As an
antenna, a piece of any type of wire, approximately one
meter long, will be sufficient for a reliable control
range of up to 400 metres, with our FMT... hand
transmitters. A longer wire or a proper 27 MHz CB-Antenna
should further improve performance in reception. If a
CB-Antenna is used, the shield of the cable must be
connected to the "minus terminal".
A push
Button (designated as "TEST") is provided for
relay output testing.
In the
momentary mode (MOM) the relay is only activated while the
correct signal is received. When changing the slide switch
from "MOM" to "FF" (flip/flop mode)
the output relay is toggled with every correct incoming
signal. This enables the direct use for switching on/off
lights etc. In flip/flop mode, the relay always
energizes
at the initial
"power-up".
If a
"latching-on" output is required, for example
receiver is used together with a "Panic Button",
a wire link is to be fitted as shown below. In such a case
the relay can only be reset again by momentarily
interrupting the supply.
Care must
be taken, not to bring a receiver near strong magnetic
fields, such as DC-Motors, speakers, magnets for reed
switches, transformers etc. as it would
magnetize
the coils and may cause severe
de-tuning.
To download detail of this
equipment please
click
here (pdf file size 143KB)
To purchase or request
for a quotation on the above system please
e-mail.
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