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Pin 10
Positive voltage supply U+ between 2.0 and 3.6 V DC
Pin 11
Ground GND = 0V DC
Pin 12
Analogue input
The status of a supplied voltage is sent back to the transmitter and may be used for battery information on the receiver side. The 3 steps
depends on the supply voltage. For +U = 3.3 V the steps are as follows:
Voltage > 1.2 V:
Voltage 1,2 ... 1,1V:
Voltage 0,5 ... 1,1V:
Voltage < 0.5 V:
Pin 13
Output to control a piezo disc
Supply voltage protection:
Selection of learn- or erase mode:
Leave learn- or erase mode:
Learn or erase:
Clear list:
Pin 14
Output to control a LED (low active)
Normal receive mode:
Learn- or erase mode:
Pin 15
Antenna GND
e.g. connection for the shield of a 50Ohm-coaxial-cable
Pin 16
Antenna Connection
5
Installation
For the location of the receiver module, select a place which is not shielded by conducting objects and position the antenna in such a
way that it is not subject to interference from the rest of the circuit and is parallel to the transmitter antenna.
Pay attention to the correct polarity when performing the connections and make sure the technical data are kept
within specifications. If the voltage supply exceeds the specified voltage, the electronic components may be
destroyed, for example, when using unregulated voltage sources. Since the circuit is unprotected, it is necessary to
avoid static discharges and mechanic influences.
Learning transmitters or keys:
Use pin 2 as described in point 4 to access the desired learn mode. You receive confirmation from pin 3. Now press one of the buttons
of the transmitter in a distance of not less than 1m. You receive confirmation from pin 2 and pin 13. Check for error free operation the
receivers output states by pressing the transmitter buttons.
Erase transmitter or keys:
Use pin 2 as described in point 4 to access the desired erase mode. You receive confirmation from pin 3. If the erase mode I is
selected, press one of the buttons of the transmitter in a distance of not less than 1m. You receive confirmation from pin 2 and pin 13.
Check for error free operation the receivers output states by pressing the transmitter buttons.
Wiring
Please find enclosed a wiring example for the usage of different functions.
5
Technical Data
Working frequency:
Max. transmission power:
Antenna connection:
Supply voltage:
Current consumption @ 3,3V:
Current consumption @ 2,0V:
Ambient temperature:
Dimensions:
Supply is ok – the transmitters LED remains off
Supply low – the transmitters LED flashes slowly
Supply empty – transmitters LED flashes quickly
Not allowed; for service purposes only
If the supply voltage drops below a critic level the CX-12 R shuts down and a specific melody sounds
A specific melody sounds if a learn- or erase mode is selected
A specific melody sounds if a learn- or erase mode has been leaved
A specfiic melody sounds if a transmitter or key has been learned or erased
A specific melody sounds if the list of learned transmitters and keys has been cleared
Transmitter supply voltage low:
Transmitter supply voltage empty:
Entry could not be erased from list:
List is full – learning failed:
List already contains this transmitter or key:
e.g. for an antenna (173mm wire) or 50Ohm-coaxial cable.
f1 433,62 MHz; f2 434,22 MHz
10 mW
50 Ohm
2 – 3,6 V DC
18,2mA (clocked 1,4mA)
17,3mA (clocked 1,1mA)
-20°C to +65°C
31,4mm x 15,2mm x 3mm (pitch 2,54mm)
Flashes 1x
Flashes 2x
Flashes 2x
Flashes 3x
Flashes 2x
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