LED Control
24
External Bi-color LED
Control
When SW 5-3 is On and SW5-2 is Off, the function is External Bi-color
because there are two LEDs (Red and Green) in the reader.
The LEDs will appear as Yellow when both Red and Green are on,
making the function essentially a Tri-color (Red, Green, Yellow).
Two Wire (Red and Green)
There are two cases of External Bi-color — two wire and one wire. With
two wire, the Red and Green LED drives are wired as shown in Figure 13
FIGURE 13. External Bi-color (2 wire)
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