The Aetek AET-C11-08232120 is an indoor unmanaged EXPoE switch series equipped with DIP switch which provides EX "EXtensive" operation mode. This switch is specially designed for IP surveillance application and besides the standard 802.3af/at PoE functions, the EX mode can deliver extreme distances of camera images and maximum power of up to 250m via specific EX ports for long reach PoE IP cameras. The Aetek AET-C11-08231120 also features an extra 20 per cent range of input voltage tolerance, lightning surge protection of AC power and PoE surge protection to prevent the damage that can be caused by outside unstable AC power, lightning surges and power spikes. Altogether, these unique features reduce the costs to replace the damaged fault unit.