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Alarm IN/OUT
Alarm_In could use any 3rd party Sensors (like IR Motion Sensor).
Alarm_Out device could use 3rd party Siren and Strobe Light, or Electric Door Striker, etc.
The figure below shows illustration of the Circuit for Alarm_In and Alarm_Out.
Notes:
The Alarm_In and Alarm_Out circuit for the GDS371x should meet the following requirement:
Alarm Input
Alarm Output
The Alarm_In circuit, if there is any voltage change between 3V and 15V, as specified in the table above, the GDS3710 Alarm_In port will
detect it and trigger the action and event.
Higher voltage and wrong polarity connections are prohibited because this will damage the devices.
Protection Diode
When connecting the GDS371x to a door strike it is recommended to set an EMF protection diode in reverse polarity for a secure use, below
examples of deploying the GDS3710 for the protection diode.
The reverse EMF protection diode must always be installed in reverse polarity across the door strike.
Note
Power polarity connection: Diode: SS24 or If>=2A, Vr>=40V.
Connection Examples
Alarm_In/Out Circuit for GDS371x
3V<Vin<15V, PINs (1.02KΩ)
125VAC/0.5A, 30VDC/2A, Normal Open, PINs
Protection Diode – Example 1
Protection Diode – Example 2
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