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FMR1510812R, FMR1510824R
Eight-Channel 151MHz Receiver with Relay Outputs
Features
• Wide supply connection – 11.0 to 14.0 Volts AC/DC for FMR1510812R or 21.0 to 28.0 Volts AC/DC for FMR1510824R
• Eight channel receiver with relay outputs
• Low current consumption
• Built-in noise or signal strength indicator
• User can select 8 different frequencies
• Momentary, Flip Flop and Latching modes are all user selectable
• Easy code setup with dip switch settings
Applications
• Pump Control
• Long distance panic button
• On/Off applications in agricultural devices
• Security alarm
• Basic Telemetry eg. Water level indication
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Click image to enlarge |
FMR1510812R
8-Channel, 11-14VAC/DC,
12V Relay Outputs |
FMR1510824R
8-Channel, 21-28VAC/DC,
24V Relay Outputs |
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 Download Datasheet
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Description
The 151MHz receivers use dual conversion, narrow band FM which makes it ideal for industrial applications. Built into the receiver is a noise and signal strength indicator. The user selectable frequency synthesizer allows for easy installation on a frequency that is not in use, allowing optimal performance in the receiving range.
The receiver outputs are relays that are voltage free allowing the user to connect any voltage up to 240VAC with currents of 8 amps.
Case
The FMR1510812R, FMR1510824R can be supplied without a case, this allows the receiver to be integrated according to your needs.
The C160 case (weather proof) can be used to enclose the FMR1510812R, FMR1510824R receiver. The receiver with a case is known as FMR1510812RE, FMR1510824RE.
Different Modes for each Output
Modes are user selectable from the 4-way dip switch, shown below.
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.
Signal Strength Indicator
The 151MHz receivers have five blue LED’s on the board. The table below indicates the level of the valid transmitted signal.
5 LED’s on |
-70dBm |
Very Strong signal |
Very Reliable operating conditions |
4 LED’s on |
-75dBm |
Very Strong signal |
Very Reliable operating conditions |
3 LED’s on |
-80dBm |
Very Strong signal |
Very Reliable operating conditions |
2 LED’s on |
-90dBm |
Strong signal |
Very Reliable operating conditions |
1 LED on |
-100dBm |
Good signal |
Reliable operating conditions |
Noise Strength Indicator
If more than 1 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. The default setting is for 151.6MHz (All 3 dipswitches “ON”). Below is a table with the Dipswitch settings and the frequencies.
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 |
Products in the Range
Technical Data
| Supply Voltage |
FMR1510812R : 11.0 to 14 V AC/DC Absolute maximum DC 18 Volts
FMR1510824R : 21.0 to 28 V AC/DC Absolute maximum DC 35 Volts
Can use Elsema AC power pack (12PP1000 or 24PP )
Supply lines should be less than 3 metres long to comply with radio frequency authorities |
| Current Consumption |
40mA standby, 240mA if all outputs “On” |
| Receiver Type |
Dual Conversion Superheterodyne |
| Receiving Freq |
151.6MHz (8 selectable frequencies. See table above). |
Oscillation System |
VCO with 10ppm crystal controlled reference oscillator |
Operating Temperature Range |
-5 to 50°C |
IF Frequency |
10.7MHz |
| Sensitivity |
Better than 0.5uV (For relay to activate) |
Selectivity |
Better than -6dB at ±25kHz |
Type of Demodulation |
Narrow-Bandwidth Frequency Modulation (FM) |
Occupied Bandwidth |
25kHz at -20dB |
| Relay Contacts |
Common (C) Normally Close (NC) and Normally Open (NO) |
| Output Modes |
User selectable from 4-way DIP switch
1 |
2 |
3 |
4 |
Mode |
Description |
Off |
Off |
Off |
Off |
All Momentary |
Outputs on, only while correct signal is received. |
On |
Off |
Off |
Off |
All Flip- Flop |
Outputs alternate at every correct incoming signal. |
Off |
On |
Off |
Off |
Momentary and Flip-Flop |
Outputs 1 to 4 are momentary and 5 to 8 are flip-flop. |
On |
On |
Off |
Off |
Latching on |
Outputs will be on until supply to receiver is momentarily interrupted. |
Off |
Off |
On |
Off |
Momentary and Flip-Flop |
Outputs 1 to 6 are momentary and 7 to 8 are flip-flop |
On |
Off |
On |
Off |
Momentary and Flip-Flop |
Outputs 1 to 2 are momentary and 3 to 8 are flip-flop |
Off |
On |
On |
Off |
Momentary and Flip-Flop |
Outputs 1 to 3 are momentary and 4 to 8 are flip-flop |
On |
On |
On |
Off |
Latching and Momentary |
Output 1 is latching and 2 to 8 momentary |
Off |
Off |
Off |
On |
Latching and Momentary |
Output 1-7 is latching and 8 is momentary |
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Connection |
Supply, Antenna & Outputs - Screw type terminal block |
Antenna |
50Ω, 151MHz Antenna, Elsema ANT151M for maximum performance
A piece of approximately 1metre wire can be used for short range applications |
| Microcontroller |
Can be re-programmed to suit your customised needs |
Dimensions |
130 x 94 x 42mm |
Mounting Hole Size |
3.97mm or 5/32” |
Weight |
240g |
| 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 |
Block Diagram
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