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D-Link DCS-5222LB1 User Manual
Appendix A: DI/DO Specifications
DI/DO Specifications
Pin 1
Pin 4
Pin 3
Pin 2
Internal 5V Power
External 3~12V Power
DI Input
DO Output
GPIO
PTC 1
PTC 2
DI Input
DO Output
GPIO
PTC 1
PTC 2
DC3 V ~ 12V
PIN
FUNCTION
NOTE
1
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 protec-
tion against voltage transients. Max loading is 100 mA.
2
DC5V OUTPUT
DC 5 V Output / Max. 100 mA
3
Digital In (DI)
A switch from DI to GND, activated by setting NO. or NC.
4
GND
GND