Robust Industrial Gigabit Switch Durable and Reliable Network for Harsh Environments Durable Performance Network that You Can Rely on 6KV Surge & Power BackFeed Protection Supports 6KV lightning surge and power backfeed protection for connected devices from non-standard power source. Further avoiding damage done to the switch and connected devices. EDIMAX IGS-1105P Industrial 4-Port Gigabit PoE+ DIN-Rail Switch with 1 SFP Port, wide temperature range Wide Temperature Range The industrial switch operates with a wide temperature range from -20°C to 70°C (-4°F to 158°F) for industrial network deployment in the extreme hot and freezing environments. PoE Long Range Guaranteed 200M Provides the PoE long range solution with guaranteed of 200 meters (656 ft.) , ideal for surveillance and parking lot applications.