Features Allow low power optical input; Six LEDs indicate status of optical input power and power supply; Frequency bandwidth: 5-862MHz, 5-750MHz; Two output ports in forward path; Changeable tap/ splitter; Modular return-path optical transmitter; Adjustable attenuator and fixed attenuator in forward path; Adjustable attenuator in return path; All of the bi-directional ports are capable of passing power into or out of the unit; High efficiency and wide range switching power supply; Spark-Arrestor at RF output port to offer surge protection