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FMR-212
27MHz FM Receiver, 10-28VDC/AC
(Please take note of the Label in BLUE)
Features
• Wide supply connection – 10.0 to 28.0 Volts AC/DC
• Crystal Controlled
• Digitally Encoded
• Relay Output
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 Click image to enlarge
 Download Datasheet
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Description
The
FMR-212 is a crystal controlled single channel receiver, comprising
of receiving, decoding and relay-output sections. A specially designed
micro-controller is used 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 AC/DC current up to 5 Amps.
Connection
to the receiver is via a six-way screw-type terminal block. The
receiver can be mounted to a Quick Mount or in a black UBB case.
A proper 27 MHz CB-Antenna will give a reliable control range of up to 200 metres, when used with Elsema’s FMT-301, FMT-302, FMT-304 transmitters. If a CB-Antenna is used, the shield of the cable must be connected to the "Sh 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.
If a "latching-on" output
is required, for example receiver is used together with a "Panic
Button", two wire links are to be fitted and the switch to be ON, as shown below. In such a case the
relay can only be reset again by momentarily interrupting the supply.
Compatibility
All Elsema type FMT-… series
FMT-PET
FMT-101
FMT-301, FMT-302, FMT304
FMT-401, FMT-404
FMT-312
Products in the Range
Click image to enlarge
FMR-212Q - Receiver with QM100 Quick Mount |
Click image to enlarge
FMR-212E
- UBB plastic case with aluminum mounting bracket and a keyhole
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Technical Data
| Supply Voltage |
10 - 28 VAC
Can use Elsema AC power supply PP12 or PP24 |
| Current Consumption |
15mA stand by at 12 VDC; 40mA if relay is "ON" at 12VDC |
| Receiving Frequency |
27.145MHz (Other freq. available: 27.045, 27.195 & 27.455MHz. NB. 27.455 freq. is not available for Australia ) |
| Type of Crystal Used |
26.690MHz, 3rd overtone, 20pF, 30ppm at 0-50°C |
| IF Freq |
455kHz |
| Selectivity |
At least -40dB at ±10kHz |
| Sensitivity |
Better than 1uV (for transistor to switch on) |
| Type of demodulation |
Narrow-bandwidth Frequency Modulation (FM) |
| Band Width |
±2.5kHz |
| Decoding System |
Onboard 12-way coding switch (4096 digital channels) |
| Output |
Change over relay output, rated at 5A / 240V |
| Relay Contacts |
Common (C) Normally Close (NC) & Normally Open (NO) |
| Connections |
6-way screw type terminal block |
| Antenna |
50 ohms, 27MHz CB-Antenna or approximately 300mm long wire for short range applications. |
| Dimensions |
96 x 70 x 20mm |
| Mounting |
Clip into a QM100 Quick Mount or UBB plastic case |
| Weight |
58g |
| Compatible Transmitters |
FMT-... series |
FMR-212 Block Diagram
FMR-212, 12/24 V Application
FMR-212, 240/110 VAC Application
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