D-Link DCS-3420 Product Manual - Page 58
I/O Connector Definition for the Internet Camera
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Section 3 - Configuration I/O Connector I/O Connector Definition for the Internet Camera The DCS-3420 provides a general I/O terminal block with one digital input and one relay switch for device control. The relay switch of pin 1 and pin 2 can be used to turn the external device on or off. Pin 3 and pin 4 can be connected to an external sensor and the state of voltage will be monitored from the initial state 'LOW' The I/O connector provides the physical interface for digital output (DO) and digital input (DI) that is used for connecting a diversity of external alarm devices to the Internet Camera such as IR-Sensors and alarm relays. The digital input is used for connecting external alarm devices and once triggered images will be taken and e-mailed. I/O Connector 1 SW_COMMON OUTPUT (open from SW_OPEN at initial state)(close with SW_OPEN when set DO to ON) 2 SW_OPEN OUTPUT (Max. 1A, 24VDC or 0.5A, 125VAC) 3 DI+INPUT (Max. 50mA, 12VDC) 4 DI-INPUT (Initial state of DI is low) D-Link DCS-3420 User Manual 58