The EFA-200C-20 from Alnair Labs Corporation is a Fiber Optic Amplifier with AC Voltage 100 - 240 VAC, Input Power -10 to 10 dBm, Noise Figure <5.5 dB (typ.5 dB), Saturated Output Power >+20 dBm, Saturated Output Power 0.1 W. More details for EFA-200C-20 can be seen below.