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Connection of LED Indicators
®
2N
IP Audio Kit is equipped with three independent current LED control outputs (LED1±,
LED2± and LED3± terminals). All of them are current outputs (20 mA, up to 12 V). You can
connect the LEDs directly to the terminals of these outputs or use LEDs with serial resistors.
Mind the polarity while connecting the LEDs to make your device work properly.
The functions of the LED1, LED2 and LED3 outputs are programmable.
Connection of Keypad/Buttons
®
2N
IP Audio Kit is equipped with an interface for connection of an external matrix keypad or up
to 16 separate buttons; see the figure below:
The buttons are connected in a 4 × 4 matrix to the ROW1–4 (output) and COL1–4 (inputs)
terminals. If you do not make use of all of the 16 buttons, you can leave some of the ROW and
COL signals unconnected. If you need one button only, connect it to the ROW1 and COL4
terminals.
The button function is programmable. You can set the numerical keypad buttons to any matrix
position (0 to 9, *, #) or configure one of the 16 buttons for dialling a telephone directory
position.
Installation manual 2N® IP Audio Kit
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