FMR-203,FMR-203SS
27MHz, 2-Channel FM Receiver.

Description

The FMR-203 is a crystal controlled two channel receiver (where one is a digital output and one is an open collector output), comprising of receiving, decoding and open collector 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 an application that requires the 27MHz receiver to be mounted on a printed circuit board.

If the code of the input signal (from a transmitter) matches the setting of the coding switch on the receiver (up to 1024 combinations), an output is obtained i.e. the open collector is switched to ground.

Connection to the receiver is via a six-way female connector. The male connector can be soldered onto any type of printed circuit board, requiring a 27 MHz receiver. The male connector is available as a Nylon 6-way male low profile connector, part number 6WLP or high profile connector part number 6WHP. See design dimensions page for more details.

Elsema’s ANT27MHz series antennas will give a reliable control range of up to 200 metres, when used with Elsema’s FMT-301, FMT-302 and FMT-304 transmitters.

The default mode is in momentary mode, i.e. the output transistor is only activated while the correct signal is received.

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 magnetise the coils and may cause severe de-tuning.

The FMR-203 has 2 versions:

Compatibility

All Elsema type FMT-… series
KEY-301, KEY-302, KEY-304
FMT-301, FMT-302, FMT-304
FMT-401, FMT-402, FMT-404
FMT-312E, FMT-31202E, FMT-31204E

Products in the Range

FMR-201 Single Channel Receiver with Open CollectorOutput	FMR-203 2-Channel PCB Strip Receiver	FMR-212 Single Channel Receiver with Relay Output	FMR-212T Single Channel Receiver with Timer Controlled Relay Output	FMR-24001 Single Channel 240V Receiver with Relay Output
FMR-24002 2-Channel 240VAC Receiver with 2 Relay Outputs	FMR-202 2-Channel Receiver with 2 Relay Outputs	FMR204-12 4-Channel 12V Receiver with 4 Relay Outputs	FMR204-24 4-Channel 24V Receiver with 4 Relay Outputs	FMR-204/16 4/16 Channel Receiver with Open Collector Outputs
FMR-232R Computer Receiver with 2 Relay Outputs & Database Software	FMR-100 Receiver for Multi-Channel System	RXD-101 Decoder for Multi-Channel System

Technical Data

NB:
All input & outputs are protected against possible transients or static charges
If antenna is a piece of wire, install away from metal parts
Keep coils L1 & L2 away from magnetic components such as speakers, motors, transformers etc
Do not change factory tuning of L1 & L2 coils

Circuit Diagram

Dimensions