Features: 1) Using excellent photodiode detector to realize photo-electric conversion 2) Supporting 1310nm and 1550nm two windows operation 3) 860MHz or 750MHz bandwidth, wide enough to meet the requirements of the different two-way multifunctional networks 4) Directly outdoor install, excellent water-proof and heat dissipation performance 5) GaAs technology, four high-level and low nonlinear distortion output ports 6) Excellent switching power supply, adapt to the wide voltage range (40 - 90V AC), guarantees stabilization of the optical receiver 7) Return optical transmission unit, FP or DFB laser available