CamVtech USA 12V 5A (5000mA) AC DC Power Supply Adapter + 1 Female to 8 Male Power Splitter Adapter 8 Channel CCTV Security Surveillance Systems 12V DC 5.0 Ampere (5000 mA) This Power supply is FCC certified and approved 5.5 mm (outside dimension) x 2.1 mm (inside dimension) Use it with For Security Cameras, etc Short Circuit Protection