1- 10AA DC female connector 2.1mm common for cctv cameras and mics
2.1mm center positive Battery Holder 12v DC which runs a 120ma camera, & 30ma mic for up to 18hrs.
BATTERIES NOT INCLUDED
USING 10 DURACELLS 1.5 VOLT= 14.4V DC
USING 10 RECHARGEABLE BATTERIES 1.25 VOLTS = 12V DC
Works great for many portable devices requiring 12v power for ex: wireless tx rx, gps, web tablets, & fish finders.