TRENDnet’s 5-Port Industrial Gigabit PoE++ Powered DIN-Rail Switch with PoE Pass-Through, model TI-B541, is powered by a PoE++ switch or injector, no AC adapter is required. The PoE-powered industrial switch features four gigabit PoE+ ports to power devices such as IP cameras, VoIP handsets, and wireless access points. The switch’s PoE++ powered feature allows it to be installed in a place where there is no power source nearby. With an operating temperature range of -40°– 75 °C (-40° – 167 °F), the hardened IP30 rated housing is suitable for extreme industrial environments.