D-Link DCS-2230L User Manual page 67

Appendix A: DI/DO Specifications
PIN
1
2
3
4
Internal 5V Power
DC Power 5V
N.C / N.O
100 mA
D-Link DCS-2230L User Manual
DI/DO Specifications
Pin 1
FUNCTION
Digital Out (DO)
Uses an open-drain NFET transistor with the source connected to GND in camera. If used
with an external relay, a diode must be connected in parallel with the load for protection
against voltage transients. Max loading is 100 mA.
Digital In (DI)
A switch from DI to DND, activated by setting NO. or NC.
DC 5V OUTPUT
DC 5 V Output / Max. 100 mA
GND
GND
DND
5V
DI
Reed switch
DO
Diode
ALARM
Pin 4
Pin 2 Pin 3
NOTE
DC Power 5V
N.C / N.O
R
External 3~12V Power
DND
5V
DI
DO
100 mA
DC Power 3V~12V
Reed switch
R
Diode
ALARM
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