External Device I/O Terminals (VB-H41 / VB-M40)

Article ID: ART138591 | Date published: 05/13/2015 | Date last updated: 08/28/2015


External Device I/O Terminals (VB-H41 / VB-M40)



External Device I/O Terminals (VB-H41 / VB-M40)

External device I/O terminals consist of two input and output systems each. Viewer can be used to check external device input status and control ouput to an external device (see “Operation Guide” > “Selecting the External Device Output” and “Displaying Event Status”).

External Device Input Terminals (IN1, IN2)

External device input terminals consist of two sets (IN1, IN2) of two terminals, with the negative terminals connected to the camera interior GND. Connecting cables to the positive and negative terminals and opening or closing the circuit notifies the Viewer.


• When connecting sensors and switches, connect terminals that are electrically isolated from the respective power and GND.

• Do not push the external device I/O terminal button with too much force. Doing so may cause the button to remain pushed-in.

External Device Output Terminals (OUT1, OUT2)

External device output terminals consist of two sets (OUT1, OUT2) of two terminals. The sets have no polarity. Controls from the viewer can be used to open and close the circuit between the terminals. Using optical couplers, the output terminals are isolated from the camera's circuit.

The load connected to the output terminals should be within the following rating range.

Rating between output terminals:

Maximum voltage 50 V DC

Continuous load current at or below 100 mA

On resistance: Max. 30 ?


Adaptive wiring for external device cables Solid conductor AWG: No. 28 – 22

Conductor size: 0.32 – 0.65 mm ( 0.013 – 0.026 in.)

Cable strip should be approx. 8 – 9 mm (0.315 – 0.354






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