Tyco iSTAR eX, Installation And Configuration Manual

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LED Connections
4–30 iSTAR eX Installation and Configuration Guide
External Bi-color
LED Control
If both switches are Off, the Function is External Bi-color, which refers to the
two LEDs (Red and Green) in the reader. The function is essentially Tri-color
because in some cases the LEDs appear as Yellow.
2 Wire (Red and Green)
There are two instances of External Bi-color; two wire and one wire. With two
wire, the Red and Green LED drives are wired as shown in Figure 4.25
.
Figure 4.25: External Bi-color (2 wire)