... duplex mode, and auto MDI/MDI-X connection. Features:1. Advanced Ethernet switch technical2. IEEE802.3/802.3u/802.3x/802.3d ... negotiation4. Broadcast storm protection5. Relay output warning for power failure and port break alarm6. Redundant 24VDC power input(12V~36VDC)7. -40~75 ... ), EN61000-4-3(RS), EN61000-4-4(EFT), EN61000-4-5 (Surge), EN61000-4-6 (CS), EN61000-4-8, EN61000-4 ...