Featuring Plug and Play designed to be installed in heavy industrial demanding environments, the ISW-504PT is a PLANET Industrial-grade, DIN-rail type Unmanaged Fast Ethernet PoE+ Switch with 4 10/100BASE-TX PoE+ ports, and 1 additional Fast Ethernet interface for video uplink. The ISW-504PT is designed with redundant power system and is able to operate reliably, stably and quietly in any hardened environment without affecting its performance. It comes with a total power budget of up to 120 watts for different kinds of PoE applications and operating temperature ranging from -40 to 75 degrees C in a rugged IP40 metal housing. The ISW-504PT has a built-in solid DIP switch providing Standard, VLAN and Extend operation modes. By default, the ISW-504PT operates as a normal IEEE 802.3af/at PoE+ Switch in the Standard operation mode. The VLAN operation mode features with port-based VLAN function helps to prevent the IP camera's multicast or broadcast storm from influencing each other. To facilitate the 802.3at PoE+ usage with commonly used 12-48V DC power input for transportation and industrial-level applications, the ISW-504PT adopts 12-48V DC to 54V power boost technology to solve power source issue but does not require special power supplies. The ISW-504PT provides an integrated power solution with a wide range of voltages (12-48V DC) for worldwide operability. It also provides dual-redundant, reversible polarity 12-48V DC power supply inputs for high availability applications.