This is a very simple splitter cable perfect for using multiple cameras on 1 power supply. One female 2.1mm DC socket then 25cm cable and 6 x Male 2.1mm Plugs. It is very important to ensure the total load of the cameras does NOT exceed the output current of your power supply.
Simple calculations: If you have 8 cameras using 300mA each = 2.4Amps - you need a minimum 2.5Amp power supply, preferably 3Amps.
Cam1+Cam2+......+Cam8 = Total Current Required.
Should you require a larger power supply please search the site, we have larger supplies available