The SL-FRA-1650-xxxx mW from Shanghai Sail Laser Technology is a Optical Amplifier with Gain 10 to 20 dB(Raman), Isolation >35 dB, Supply Voltage (AC) 100 to 240 VAC, Supply Voltage (DC) 5 VDC, Wavelength Range 1570 to 1650 nm. More details for SL-FRA-1650-xxxx mW can be seen below.