Hardware Manual
35
Consequently, to connect a second DI or DO device, use the GND and DI2 cables to connect the
second DI device, and the 12V and DO2 cables for the second DO device.
12V DC Speaker
(DO1 Device)
Alarm Button
(DI1 Device)
Infrared Sensor
(DI2 Device)
High Voltage DO Device Connection
Even though the camera provides 12V power, this may not be enough for some high voltage DO
devices, such as a ceiling light or a motor that opens or closes a gate. In this case, there is a
need to connect an external relay. See wiring scheme below:
Note that when choosing an appropriate relay, please refer to its specifications and make sure
they match the above design. The triggering circuit voltage has to be around 12V DC and the
switch-controlled circuit voltage has to match the external power supply (e.g. 110V AC or 220V
AC).
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