The PSPRO-12V5A is 5 Amp 12V DC individual power supply used to power that accepts a power source input of 100-240v ~ 50/60Hz. In video surveillance applications, this power supply is used mainly for very large infrared security cameras that require a lot of power. This power supply includes a US power input plug. The power output uses a standard 2.1mm DC power plug which is compatible with almost all security cameras and other DC powered devices on the market. The 2.1mm plug works with pre-made Siamese CCTV camera cables which enables an easy plug and play CCTV camera installations.