40 channel 433.920MHz DIP switch
The multi-channel hand-held transmitter S20 works in AM technology with 18-bit linear code. With the S20 433/868 A4000 you can operate door systems with up to 40 doors in impulse mode. The channel selection switch is used to assign a channel to the transmitter buttons.
With the S20 433/868 A4000 with coding switch, you have the option of setting 1,024 different security codes. You can also set the same code for several transmitters in order to control the same receiver with all of them.
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