ELSEMA FMR15102 2 Channel 151MHz Receiver User Guide

: June 4, 2024
: ELSEMA

Table of Contents

Features
Applications
Description
Different Modes for the Output
FMR15102
Technical Data
Products in the Range
Block Diagram
References
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ELSEMA FMR15102 2 Channel 151MHz Receiver User Guide

Features

Two channel receiver with relay outputs
Supply voltage can be 12 – 24 Volts AC or DC
Low current consumption
Built-in noise or signal strength indicator
User can select 8 different frequencies
Output modes are all user selectable
Easy code setup with dip switch settings
Optional QM100 bracket available for easy mounting to cases or walls. C1015 or C1020 case is also available

Applications

Pump Control
Long distance panic button
On/Off applications in agricultural devices
Security alarm
Basic Telemetry eg. Water level indication

Description

This receiver gives you two relay outputs with a contact rating of 8 amps at 240VAC. The relay mode can be set to momentary, latching or security latching.

The user can select 8 different narrow band frequencies and program unlimited number of transmitters to the receiver. With a narrow band FM 151MHz signal from the transmitter a line of sight operating range of 5000 metres is possible. The receiver uses a crystal oscillator circuit that ensures high frequency stability allowing optimal performance in the receiving range.

Different Modes for the Output

2-Way DIP Switch Mode Settings
The output relay will respond in the following manner when receiving the correct signal from a transmitter
Different Modes for the Output

Momentary – Output is active for as long as the transmitter button is pressed.
This is a standard mode on most automatic gates or garage door openers.

Latching – Output remains active until next press of the transmitter button.
Similar to switching “on” and “off” a light.

Delayed OFF – Output remains active for the duration of the time set by the trim pot.

Security Latching – Output remains active until power to the receiver is removed. Similar to security alarms and fire alarms.

Coding

The 12 way dip switch on the receiver sets the 12 bit unique code for the system.
This has to be matched to that on the transmitter. Do not use the factory default code.

Apart from the 12 way dip switch there will be an additional dip switch

depending upon the receiver type:

Two channel receivers will have a 2 way dip switch.

This DIP switch on the right side of the 12 way dip switch denotes the channel. See table below.

Generally to use a 2 channel Tx to 2 channel Rx match all the 14 dip switch (12way + 2way just on the right side of the 12 way).
To use a 2 channel Tx to control 2 x single channel receivers, first match the 14 dip switch positions and on the receiver, 15th dip switch OFF is Ch1 and 15th dip switch ON is Ch2.

To use a 2 channel receiver with 2 x single channel transmitters, first match 14 dip switch and then the Tx with Sw15 OFF will activate the Ch1 on the receiver and the Tx with Sw15 ON will activate the Ch2 on the receiver.

FMR15102

2-Way DIP Switch & 2 Relay Output

SW13	SW14	Relay 1	Relay 2
OFF	OFF	Ch1	Ch2
OFF	ON	Ch3	Ch4
ON	OFF	Ch5	Ch6
ON	ON	Ch7	Ch8

Signal Strength Indicator
The 151MHz receivers have green signal strength LED’s on the board. The table below indicates the level of the valid transmitted signal.

6 LED’s on	-70dBm	Very Strong signal	Very Reliable operating conditions
5 LED’s on	-75dBm	Very Strong signal	Very Reliable operating conditions
4 LED’s on	-80dBm	Very Strong signal	Very Reliable operating conditions
3 LED’s on	-90dBm	Strong signal	Very Reliable operating conditions
2 LED on	-100dBm	Good signal	Reliable operating conditions

Noise Strength Indicator
If more than 2 led is “ON” without a valid transmission, this indicates that there is noise on the frequency selected. Change the 3-way dipswitch on the receiver module to select a different frequency. Following is a table with the Dipswitch settings and the corresponding frequencies.
FMR15102

Frequency	1	2	3
151.600 MHz	On	On	On
152.375 MHz	Off	On	On
151.775 MHz	On	Off	On
151.400 MHz	Off	Off	On
151.175MHz	On	On	Off
151.025 MHz	Off	On	Off
150.900 MHz	On	Off	Off
150.825 MHz	Off	Off	Off

Technical Data

Supply Voltage| 12 – 24 Volts AC or DC. Can use Elsema’s AC power pack (12PP-1000) Supply lines should be less than 3m long to comply with radio frequency authorities
---|---
Current Consumption| 24mA Standby at 12VDC| 85mA when relay “ON” at 12VDC
Receiving Frequency| 151.6MHz (8 selectable frequencies. See table above) 161MHz for New Zealand 154MHz for United States of America and Canada
Operating Temperature Range| -5 to 50°C
Connection| Supply, Antenna & Outputs – Screw type terminal block
Relay Contacts| Common (C), Normally Closed (NC) & Normally Open (NO)
Antenna| 151MHz Antenna, Elsema ANT151M for maximum performance
Dimensions| 95 x 70 x 30mm
Mounting Hole Size| 3.97mm or 5/32”
Useable Transmitters| All FMT151 series (with correct setting on the dip switch). See Transmitter datasheet for details
Useable operating range| Up to 5000 metres, depending on installation and type of antenna used. Recommended Antenna is Elsema ANT151M

Products in the Range

| | Products in the Range |
---|---|---|---
FMR15101
1-Channel| FMR15102
2-Channel| FMR15101240
1- Channel 240VAC Supply| FMR15102240
2- Channel 240VAC Supply
| | |
FMR15104
4-Channel| FMR15104240
4- Channel 240VAC Supply| FMR15108
8-Channel| FMR1510812R
8-Channel, 12V Supply
| | |
FMR1510824R
8-Channel, 24V Supply| | |