Figure 7-2: Alarm _I N And Alarm - Grandstream Networks GXV3500 User Manual

Figure 7-2: Alarm_In and Alarm_Out Connection Circuit Sample for GXV3500
NOTE:
 The Alarm_In and Alarm_Out circuit connection has to be similar to above circuit diagram and
meet following requirement:
Alarm Input
Alarm Output
 The Alarm_In circuit (like above photo coupler), if there is any voltage change smaller than 15V,
as specification listed), the GXV3500 Alarm_In port will detect it and trigger the action and event.
 Higher voltage and wrong polarity connection are prohibited because this will damage the
devices.
Grandstream Networks, Inc.
Vin<15V, PINs (1.02KΩ)
125VAC/0.5A, 30VDC/2A, Normal Open, PINs
GXV3500 User Manual
Firmware Version 1.0.1.94
Page 28 of 82
Last Updated: 05/2016