Touch io Instruction Manual
Wiegand Wiring Colors & Functions
Wire Conductor
Function
Red
- Power to
+
(positive) connector
DC Power +12VDC
Black
- Power to
-
(negative) connector
Ground (
-
)
Green
- To
D0
(data zero) connector
Data 0 (zero)
White
- To
D1
(data 1) connector
Data 1
Blue
- To
LED
connector
(Required)
On ground, continuously on.
Green LED
Orange
- To
O
(Aux) connector
(Optional)
Piezo Buzzer (C)
Yellow
-
Optional
connector
Card Present
Purple
- To
LED
connector (
Optional
) On ground, continuously on.
Red LED
Orange
- Beep. On ground, continuously on.
Shielded Drain
-
Optional
but HIGHLY suggested as an additional ground*
Shielded Ground (
-
)
Current Draw: 100mA - 200mA (typical at 12VDC) in low power mode; 350mA maximum in high power mode.
*
NOTE
: Data and signal cables are usually protected with insulated conductors and wrapped with a
conductive (metallic) shielding layer. This shielding reduces electrical noise and its impact on
signals and lowers electromagnetic radiation. Shielding is needed to combat the effects of
electromagnetic interference (EMI). Without shielding, cables can be a main source for transfer of
EMI, both as a source and as a receiver. (As a source, the cable can conduct electrical noise to other
equipment or act as an antenna radiating electrical noise. As a receiver, the cable can pick up EMI
being radiated from other sources.)
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