Q-See QSDB8209C manual Camera can run off of batteries for up to 5 hours IR OFF

2. Connect the camera to the adapter and then slide the power switch to the ON position

Note:

--This camera can also use dry batteries as a power source by loading 4 AA batteries into the battery compartment on the back of the camera with their polarities in the correct position.

--The AC adapter will work instead of batteries after it is plugged in. If the camera is not going to be used for a long period of time, please unplug the adapter and remove the batteries.

* The camera can run off of batteries for up to 5 hours (IR OFF)

3. Rotate the rounded head of the camera to the desired angle for surveillance.