
ELSEMA
1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
FMT15101E, FMT15102E, FMT151 04E, FMT15108E (Enclosed version)
FMT15101E, FMT15102E, FMT151 04E, FMT15108E ( No Case version)
1, 2, 4, 8-Channel 151MHz Transmitter
Features
• Long range – up to 5km.
• 100mW Transmitter with current consumption of 85mA
• Not affected by Natural or man-made electrical interference
• Specially programmed micro-controller
• Simultaneous channel transmission is possible; i.e. more than one
channel can be activated at a time.
Application
• Pump Control
• Long distance panic button
• On/Off applications in agricultural devices
• Security alarm
• Basic Telemetry eg. Water level indication
Description
The FMT151… has a transmission power of 100mW with a current consumption of only 85mA. It gives a
controlled range of up to 5km. The controlled operation can be an y electronic or el ectrical operate d device when
used with the FMR151… series of receivers
The channels are activated via screw type terminals onto which the user can connect reed switches, toggle
switches, push buttons or any form of normally open (NO) contact.
The transmitter uses a frequency of 151MHz and a modulation t ype of Narrow Band Width FM which makes it
suitable for industrial applications where you would have a high level of electrical interference. This transmitter is
not affected by man made or electrical interference. This makes FMT151... an ideal choice for use in heavy
industrial environment.
Each transmitter button is individually transmitted to the receiver making it possible to do simultaneous channel
transmission. This means that up to 8 different functions can be done at the same time. Each button can operate
any FMR151… series receivers making it possible to transmit each button to different single channel receivers or
to multi channel receivers
The transmitter uses a specially pro grammed micro-controller which ensures the highest reliability, low standby
current consumption (10uA) and greater flexibility. The greater flexibility allows customers to contact Elsema
and request custom written software for special functions.
External supply connection and SO239 antenna socket is provided with the transmitter.

1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
Compatible Products
FMT15101 – 1 channel
(No Case version)
FMT15102 – 2 channel
(No Case version)
FMT15104 – 4 channel
(No Case version)
FMT15108 – 8 channel
(No Case version)
Receivers:
• FMR15101 1-Channel Receiver with Relay Output
• FMR15101240 1-Channel Receiver with 240VAC Supply and with Relay Output
• FMR15102 2-Channel Receiver with Relay Output
• FMR15102240 2-Channel, Receiver with 240VAC Supply and with 2-Relay Outputs
• FMR15104 4-Channel Receiver with 4-Relay Outputs
• FMR15104240 4-Channel, Receiver with 240VAC Supply and with 4-Relay Outputs
• FMR15108 8-Channel Receiver with 8 Open Collector Outputs
• FMR1510812R 8-Channel Receiver with 12VAC or DC Supply and with 8-Relay Outputs
• FMR1510824R 8-Channel Receiver with 24VAC or DC Supply and with 8-Relay Outputs
Antenna:
• ANT151M - 1m 151MHz Antenna
Products in the Range
ELSEMA

1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
Installation Instructions for FMT15101(E) & FMT15102(E)
ON and supply is connected.
Off Delay 1 – 10 minutes
Same as mode 1 except the "off delay" is user selectable between 1 to 10 minutes.
ensures that the transmitter keeps resetting the off delay in the receiver.
1.5 – 10 seconds one burst transmission
Transmitter will transmit one burst and then go to standby or sleep mode. Adjusting the trimpot will
one new burst of the new code.
Sleep mode (10 uA) is activated when all inputs are OFF; this applies to all four modes
ON and supply is connected.
ensures that the transmitter keeps resetting the off delay in the receiver.
Transmitter will transmit a 1.5 second transmission burst and then stop for the "off delay" time
selected. The "off delay" time is user selectable between 2 to 62 seconds by adjusting trimpot on
the transmitter board. If the inputs change during the "off delay" period the new code will be
transmitted immediately . Wh en the "off delay " tim e lapses , transmitter will transmit another
burst. The transmitter will cycle (transmission and off delay) indefinitely, if at least one input is
Transmitter will transmit continuously, if at least one input is activated and supply is connected.A
transmission limit of five minutes is used to comply with local radio regulations.
To activate a receiver longer than 5 minutes, use a delay off feature in the receiver (FMR15101) and
transmitter. The delay off feature in the receiver needs to be set more than the transmitter. This
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vary the burst length. When the input is changed and supply is connected, transmitter will transmit
(Grey illustrates the position of the DIP switches)
• Refer to the website for furt her details. http://www.elsema.com/contitran.htm
The transmitter mode for FMT15104 is user selectable by simply setting the 1-Way dip-switch on the
transmitter board.
Transmitter Modes (FMT15104)
Transmitter will transmit a 1.5 second transmission burst and then stop for the "off delay" time
selected. The "off delay" time is user selectable between 2 to 62 seconds by adjusting trimpot on
the transmitter board. If the inputs change during the "off delay" period the new code will be
transmitted immediately. When the "off delay" time lapses, transmitter will transmit another
burst. The transmitter will cycle (transmission and off delay) indefinitely, if at least one input is
Transmitter will transmit continuously, if at least one code switch from the 12-Way code switch is
ON and supply is connected. A transmission l im it o f five minutes is used to comply with local radio
regulations.
To activate a receiver longer than 5 minutes, use a delay off feature in the receiver (FMR15101) and
transmitter. The delay off feature in the receiver needs to be set more than the transmitter. This
Transmitter mode for FMT15108 is 5 min Continuous transmission only.

ELSEMA
1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
Coding Instructions
The 12 way dip switch on the transmitter sets the 12 bit unique code for the system. This has to be matched to that
on the receiver.
Apart from the 12 way dip switch there will be a additional dip switch depending upon the transmitter type:
• A single channel Transmitter will have a 3 way dip switch
• 2-channel transmitter will have a 2 way dip switch
• 4-channel transmitter will have a 1 way dip switch
• 8-channel transmitter will not have any DIP switch (for ch annel selection) It only has a 12-way dipswitch for
coding. The channels are determined by the 8 inputs.
This dip switch on the right side of the 12 way dip switch denotes the channel. These are denoted as below for the
different transmitters.
FMT15101 FMT15102
With 3-way DIP switch and single input With 2-way DIP switch and 2-inputs
FMT15104
With 1-way DIP switch and 4-inputs
Generally to use a 2-channel transmitter to 2-channel receiver match all the 14 DIP switch (12-way+2-way just on
the right side of the 12-way).
To use a 2-channel transmitter to control 2 single channel receivers, match the 14 DIP switch positions and the
receiver with the 15th DIP switch OFF is Ch1 and the 15th DIP switch ON is Ch2.
To use a 2 channel receiver with 2 single channel transmitters, first match the 14 DIP switches and then the
transmitter with Sw15 OFF will activate the Ch1 on the receiver and the transmitter with Sw15 ON will activate
the Ch2 on the receiver.
Operating Frequency
There are 7 selectable frequencies available. This is achieved by setting the 3-way dipswitch. The default setting
is for 151.6MHz (All 3 dipswitches “ON”). Following is a table with the Dipswitch settings and the
corresponding frequencies.

1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
11 to 13.6 VDC (for constant RF-Output), screw type terminal. Absolute
maximum 14VDC.
Nominal 85mA at 12VDC supply (Transmitting)
Nominal 12mA on standby (10uA on sleep mode, all inputs off)
151.6MHz (8 selectable frequencies. See table above)
Operating Temperature
Range
Narrow-band-width Frequency Modulation
100mW, into 50 ohms SO239 socket
On-board 12-way Code Switch
SO239 socket is provided. Optimum performance use Elsema ANT151M antenna
90 X 56 X 15 mm (PCB Assembly)
140 X 60 X 34 mm (Enclosed).
4.00 mm or 5/32 " (PCB Assembly)
Length 76 mm (3.00") Width 45 mm
(1.77") (PCB Assembly)
Length 125 mm (4.92")
Width 45 mm (1.77") (Enclosed).
Up to 5000 meters, depending on installation and type of antenna used.
Recommended Antenna is Elsema ANT151M
All Elsema type FMR-151... series
Technical Data
ELSEMA
Frequency 1 2 3
Mounting Hole Spacing
0 - 50°C

1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
Wiring Diagrams
ELSEMA

ELSEMA
1, 2, 4, 8-Channel 151MHz Transmitter - FMT15101E, FMT15102E, FMT15104E, FMT15108E
Manufactured by
Elsema Pty Ltd
31 Tarlington Place, Smithfield
NSW 2164
Ph: 02 9609 4668
Fax: 02 9725 2663
Website: http://www.elsema.com