1310nm or 1550nm operation; Return laser module for selection; The spare power supply can auto replace the chief one to insure 5～1000MHz Two-Way platform; With good quality, high sensitivity, optical receiving module and low noise, higher output level RF amplifier module; 4 individual amplification output, high output level, forward output level up to 108dBμV(when installing GaAs module); Switching power supply, suitable for wide voltage range, small ripple, working steadily; Plug-in equalizer, attenuator design, easy to debug and upgrade; Network control module for selection, monitoring the working status and unitary reliability; Plug-in diplex filter, several frequency division for selection; 5～200MHz independent return path input port; AC60V independent power supply input port; Double optical receiving modules are automatically switched;