Queclink GL320M Series - External Input Connection

GL320M Series User Manual
QSZTRACGL320MUM0100 11
5.5. External Input Connection
Pin 2 on the Type-C USB connector is a negative trigger input. It is named as IN1 pin.
For negative trigger input, the electrical characteristics are:
Logic State
Electrical Characteristics
Active
0V to 0.8V
Inactive
1.7V to 32V or Open loop
An input example is shown as the following figure:
Figure 8. Example of /IN1 pin connected to a panic button
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