Operating Instructions
433MHz radio receiver set
Item No. 1839717
Intended use
The 2 channel radio receiver set is intended for use in wide range of remote switching and
controlling functions. Possible applications include garage door, gates, lighting and many
others. The output switch contacts are suitable to handle mains voltage.
For safety and approval purposes, you must not rebuild and/or modify this product. If you use
the product for purposes other than those described above, the product may be damaged. In
addition, improper use can result in short circuits, fires, electric shocks or other hazards. Read
the instructions carefully and store them in a safe place. Make this product available to third
parties only together with its operating instructions.
This product complies with the statutory national and European requirements.
All company names and product names are trademarks of their respective owners. All rights
reserved.
Features of the 2-Ch Receiver
• 2-Ch Receiver with two separate relay outputs
• One handheld transmitter included with the set
• Up to 50 transmitter codes can be learned
• Toggle or time mode can be individually configured for each of the two channels
• Built in antenna – range up to 50m with direct line of sight and no interference with other
RF-noise
• Supply voltage 12 - 15 V/DC or 9 - 12 V/AC (at 60 mA)
• Simple programming and configuration with single button
Features of the handheld transmitter
• Compact size dimensions of just 58 x 30 x 12 mm
• 4 buttons with tactile feedback
• Blue LED for showing transmitting activity
• Battery 12 V Type 27 A (included, already preinstalled)
• 48-bit security code
• Compliant with CE and RED requirements (433 MHz, <10 mW ERP) for use within EU
countries
Up-to-date Operating Instructions
Download the latest operating instructions at www.conrad.com/downloads or
scan the QR code shown. Follow the instructions on the website.
Explanation of symbols
The symbol with the lightning in the triangle is used if there is a risk to your health,
e.g. due to an electric shock.
The symbol with the exclamation mark in the triangle is used to indicate important
information in these operating instructions. Always read this information carefully.
Safety instructions
Read the operating instructions carefully and especially observe the safety
information. If you do not follow the safety instructions and information on
proper handling in this manual, we assume no liability for any resulting
personal injury or damage to property. Such cases will invalidate the warranty/
guarantee.
• The handling of products operating with electric current requires you to follow the
rules from VDE such as VDE 0100, VDE0550/0551, VDE 0700, VDE 0711 and
VDE 0860 or other local rules in your country.
• The product is not designed and authorized for use in life support or life saving
applications! Do not use the product for applications in which a temporary or
permanent failure or malfunction could cause damage to persons or propery.
• If the module is used to switch voltages greater 24 V it is necessary to have the
installation done with no voltage applied and performed by a trained professional
authorized for such work. The module may only be used in such application if it
was installed in a safe to touch enclosure.
• The module must only be used in dry and clean environment. The use near water,
heavy dirt and/or high humidity is dangerous and not permitted.
• The product must not be used in conjunction with any type of flammable liquid or
gas or other environment with risk of spark triggered explosions.
• Never exceed the limits or ratings listed in the "Technical Data" section at the end
of this user guide.
• If the module is used in schools or educational facilities or similar institutions the
operation must be supervised by trained and authorized staff.
• The product itself and all parts thereof (including packing material) are not suitable
toys for childern! (choking hazard, risk of electric shock, ...)
Operation
The handheld transmitters will send a unique digital code for each of the 4 buttons pressed.
Each receiver could learn up to 50 such codes and associate them with one the two control
channels. The assignment between buttons on the transmitter and channel on the receiver can
be freely choosen. It is possible to use the same transmitter with several receivers.
a) Learning new transmitter codes
With short pressing of the programming key on the receiver the 'learning mode' is entered:
Programming key
LED
Press short
Ch 1 LED blinking
Press short again
Ch 2 LED blinking
Press short again
LEDs off
In learning mode the receiver is waiting for codes received from transmitters. If no code is
received for about 10 seconds, the receiver will exit learning mode and return to normal
operation mode. If a code is received during learning mode, it is stored to memory and both
LEDs will flash for confirmation.
b) Configuration of the two channels for toggle or timer mode
By keeping the programming button pressed for longer duration the configuration mode can be
selected according to this procedure:
First step: choose channel
Press programming key
LED
and ...
Release, after...
Ch 1 LED blinking
Release, after...
Ch 2 LED blinking
Second step: choose desired mode
The mode of operation can be choosen individually for both channels. While the LED of Ch1 or
Ch2 is still lit from first step the programming key is pressed again, and...
Programming key
LED
pressed again, and...
slow blink sequence
...release after 1st blink
...release after 2nd blink
...release after 3rd blink
...release after 4th blink
...release after 5th blink
...release after 6th blink
...release after 7th blink
...release after 8h blink
...release after 9th blink
Function
Learning codes for Ch1
Learning codes for Ch2
Exit learning mode
Function
Setup mode for Ch1
Setup mode for Ch2
Function
choosing mode
toggle mode
0.5 sec. timer
5 sec. timer
30 sec. timer
1 min. timer
5 min. timer
15 min. timer
30 min. timer
1 hour timer