... display and control panel, display the total power, power of each port, the device temperature, etc. ( only for 8 port POE)2. The entire ... for 4 port POE)10. Effective short circuit, overload and total power protection 11. Each port with indicator light, alarm light, device alarm ... °COperating temperature-10°C ~+ 50°C 5%~95% Non-condensing Factory price 10/100M POE power switch 4 port