POTS Line: FXO (Impedance:600ohms, REN:0.4), FXS (Feedback Voltage: 48VDC, Ring: 90Vp-p), Interfaces: RJ11 port 600Ohms and dual SC 155M fiber port * Operating wavelength: 1310nm singlemode, Operating distance: 30Km on 9/125um fiber, Optical connector: SC dual type * Front LEDs: Power, Fiber Link, Di/Do, Test mode * Power: External 90-260V AC switching adapter 12VDC@1A with NEMA1-15(2 blades only), US type main plug - included in the box * Temperature: 0 - 50°C (Operating); 0 - 70°C (Storage)~Humidity: 20 - 80% non condensing (Operating); 0 - 90% (Storage)~Consumption: less than 5W~Dimensions(WxDxH): 88mm x 155mm x 23mm~Weight: 330g (without AC adapter)~Compliance: CE, FCC Class A~MTBF: 65,000 hours