FMR-24002
2 - Channel, 240V AC Receiver with 240V AC/DC 8A Relay Output

Description

The FMR-24002 is a crystal controlled two channel receiver, comprising of receiving, decoding and relay-output sections. A specially designed micro-controller is used in the decoder section, which ensures operation for highest reliability.

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 8 Amps.

Connection to the receiver is via a eight-way screw-type terminal block. The receiver can be mounted to a Quick Mount or in a C160 weatherproof 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".

Different Modes for the Output
Modes are user selectable from the 2-way dipswitch. Dipswitch 1 corresponds to relay channel 1 and dipswitch 2 corresponds to relay channel 2.

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.

Technical Data

Supply Voltage	240 Volts AC mains. 110, 115 or 120 VAC available on request only. Supply lines should be less than 3 metres long to comply with radio frequency authorities.
Current Consumption	18mA, on 240V AC
Receiver Type	Dual Conversion Superheterodyne
Receiving Freq	27.145MHz (Other freq available on 27.045, 27.195, & 27.455MHz. The 27.455 freq is not available for Australia)
Type of Crystal Used	10.245MHz, Fundamental, 20pf, 30ppm 16.495MHz, Fundamental, 20pf, 30ppm
Operating Temperature Range	-5 to 50°C
IF Freq	455kHz
Selectivity	At least -40dB at ±10kHz
Image Rejection	At 26.285MHz better than -60dB
Sensitivity	1uV (for output to activate)
Type of Demodulation	Narrow-bandwidth Frequency Modulation (FM)
Occupied Bandwidth	±2.5kHz
Decoding System	Microcontroller based 96-bit word
Code Combinations	1024
Output	Change over relay output, rated at 8 Amps/240 Volts
Connections	8-way screw type terminal block for Supply and Relay 2-way screw type terminal block for Antenna
Antenna	50 ohms, 27MHz CB-Antenna or approximately 300mm long wire for short range applications.
Dimensions	130 x 70 x 37mm
Mounting Hole Size	3.97mm or 5/32"
Weight	140g
Useable Transmitters	All Elsema Type 27MHz FMT-... series

Products in the Range

Block Diagram

Application Diagram

FMR-24002