Elsema FMR15102240: 2-Channel 151MHz FM Radio Receiver
Model: FMR15102240
Description: 2-Channel 151MHz FM Receiver with mains AC supply and 16A Relay Output.
Features
- Supply voltage: 110-240VAC
- High capacity output relay
- Pluggable type terminal blocks for easy installation
- User-selectable output modes
- Available in IP66 rated case (C1020) for outdoor installations
Applications
- Pump Control
- Long distance light control
- On/Off applications in agricultural devices
- Basic Telemetry (e.g., Water level indication)
- Security alarm
Product Overview
This receiver connects directly to the mains supply (110VAC or 240VAC) and features a relay output rated at 8 amps at 240VAC. The relay mode can be configured as momentary, latching, security latching, or adjustable timed Off delays. It supports 8 different narrow band frequencies and can be programmed with an unlimited number of transmitters. Utilizing a narrow band FM 151MHz signal, it offers a line-of-sight operating range of up to 5000 meters. A crystal oscillator circuit ensures high frequency stability for optimal performance. Pluggable terminal blocks simplify wiring, and onboard LEDs indicate power connection and relay activation. The receiver is available with a Quick Mount or in a weatherproof IP66 rated case.
Available Options
- FMR15102240: 2-Channel 240VAC Supply
- FMR15102240E: 2-Channel 240VAC Supply in an IP66 rated case
Relay Mode Selection
The output relay's behavior is determined by the 2-Way DIP Switch settings, responding to signals from the transmitter.
| DIP Switch (SW13/SW14) | Relay Mode | Description |
|---|---|---|
| OFF / OFF | Momentary | Output is active for as long as the transmitter button is pressed. Standard for automatic gates or garage door openers. |
| OFF / ON | Latching | Output remains active until the next press of the transmitter button. Similar to switching a light on and off. |
| ON / OFF | Delayed OFF (2-300 sec) | Output remains active for the duration set by the trim pot. |
| ON / ON | Security Latching | Output remains active until power to the receiver is removed. Similar to security alarms and fire alarms. |
Coding and Frequency Selection
The 12-way DIP switch on the receiver sets a unique 12-bit code that must match the transmitter. The factory default code should not be used.
Additionally, a 2-way DIP switch (SW13/SW14) is used to select the output channel for two-channel receivers:
| SW13 | SW14 | Relay 1 | Relay 2 |
|---|---|---|---|
| OFF | OFF | Ch1 | Ch2 |
| OFF | ON | Ch3 | Ch4 |
| ON | OFF | Ch5 | Ch6 |
| ON | ON | Ch7 | Ch8 |
Frequency Selection
If noise is detected (more than 2 LEDs ON without valid transmission), select a different frequency using the 3-way DIP switch. The following table shows the settings and corresponding frequencies:
| Frequency | DIP 1 | DIP 2 | DIP 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 |
Signal and Noise Indicators
Signal Strength Indicator
The receiver features six green LEDs to indicate signal strength:
| LEDs | Signal Level | Signal Description | Operating Conditions |
|---|---|---|---|
| 6 LEDs on | -70dBm | Very Strong signal | Very Reliable operating conditions |
| 5 LEDs on | -75dBm | Very Strong signal | Very Reliable operating conditions |
| 4 LEDs on | -80dBm | Very Strong signal | Very Reliable operating conditions |
| 3 LEDs on | -90dBm | Strong signal | Very Reliable operating conditions |
| 2 LEDs on | -100dBm | Good signal | Reliable operating conditions |
Noise Strength Indicator
If more than 2 LEDs are ON without a valid transmission, it indicates noise on the current frequency. Adjust the frequency selection DIP switch as needed.
Technical Data
| Supply Voltage | 110 - 240Volts AC Mains |
| Current Consumption | 18mA at 240V AC |
| Receiving Frequency | 151.6MHz (8 selectable frequencies) 161MHz for New Zealand 154MHz for United States of America and Canada |
| Operating Temperature Range | -5 to 50°C |
| Sensitivity | Better than 0.5uV (for relay activation) |
| Type of Demodulation | Narrow-Bandwidth Frequency Modulation (FM) |
| Connection | Supply & Output - pluggable type terminal blocks |
| Output | Change over relay output, rated at 16 Amps of resistive load and up to 8 Amps of inductive load |
| Antenna | 50Ω, 151MHz Antenna, Elsema ANT151M for maximum performance |
| Dimensions | 130 x 70 x 37mm |
| Mounting Hole Size | 3.97mm or 5/32" |
| Weight | 168g |
| Useable Transmitters | All FMT151 series (with correct frequency setting) |
| Useable operating range | Up to 5000 metres, depending on installation and type of antenna used. Recommended Antenna: Elsema's ANT151M. |
Diagrams
Block Diagram Description
The block diagram illustrates the main components and connections of the receiver. Key elements include:
- Antenna Connector: For connecting the antenna.
- Mounting Holes: For physical installation.
- Mode Selection DIP Switch: For configuring relay output modes.
- Frequency Selection DIP Switch: A 3-way switch for selecting operating frequency.
- Trimpot: For adjustable timed Off delays.
- 12-Way DIP Switch: For setting the unique system code.
- Relay ON LED: Indicates when the relay is activated.
- High Capacity Relay: The main output relay.
- Power ON LED: Indicates when the receiver is powered.
- Supply Terminals: For connecting mains power (110-240VAC).
- Relay Output Terminals: For Channel 1 and Channel 2, providing Common (C), Normally Open (NO), and Normally Closed (NC) contacts.
The relay output is a voltage-free contact.
Application Diagram Description
The application diagram shows a typical wiring setup for the FMR15102240 receiver. It demonstrates how to connect the receiver to a mains power source (110V/240V AC) and how the relay outputs (Relay 1 and Relay 2) can control external devices such as a light or a motor. The diagram shows the receiver connected to a 110V/240V AC mains supply. The relay outputs for Relay 1 and Relay 2 are shown with their respective Common (C), Normally Open (NO), and Normally Closed (NC) terminals. A light (maximum 10 Amps) and a motor are depicted as devices controlled by these relays. The antenna connection is also shown.
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
- FMR15108R: 8-Channel
