All switching hubs from Contemporary Controls offer these features: Operate from 8–24 VAC or 10–36 VDC power CE Mark — 93/68/EEC Auto-negotiate data rate, duplex and flow control UL 508 Listed Run at 10 Mbps or 100 Mbps data rates CFR 47, Part 15 Compliant Front-panel diagnostic LEDs C-UL Listed CSA C22.2 No. 14-M91 IP30 ingress protection 10–95%, non-condensing relative humidity