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56D-Link DCS-2210/2230 User Manual
Appendix
DI/DO Input Specications
Appendix
Pin 1 Pin 4
Pin 3Pin 2
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 protection
against voltage transients. Max loading is 100 mA.
2 Digital In (DI) A switch from DI to DC 5 V, activated by setting NO. or NC.
3 DC5V OUTPUT DC 5 V Output / Max. 100 mA
4 GND GND
Internal 5V Power External 3~12V Power
DO
DI
5V
DND
N.C / N.O
100 mA
ALARM
Reed switch
Diode
DC Power 5V
R
DO
DI
5V
DND
N.C / N.O
ALARM
Reed switch
Diode
DC Power 5V
R
DC Power 3V~12V
100 mA