ZyXEL 1000Base-LHX SFP Transceiver. Connectivity technology: Wired. Dimensions (WxDxH): 56 x 13.4 x 12.46 mm. Operating temperature range (T-T): 0 - 70 °C, Storage temperature range (T-T): -40 - 85 °C, Operating relative humidity range: 5 - 95 %. Certification: Class 1 Laser 21 CFR 1040.10 & 1040.11 CSA TUV. Compliance industry standards: 802.3z, SFP MSA, Connector(s): LC, Power requirements: +3.3V