DW-ORIA Is a high-grade type indoor forward path optical receiver, before using the MMIC on GaAs amplifying device, output level for GaAs Power multiply the amplifying module, and an increase in advanced optical AGC circuit, microcomputer automatic control, complete with RS232 communication interface and SNMP network management software, the front panel of the increase of LED display, can accurate display of receiving light power, RF attenuation, frequency equilibrium quantity, and a direct current working voltage and equipment parameters, cast aluminum shell, high reliability of switch power supply, strict anti-lightning system, to ensure that the equipment can work stably for a long time in the wild environment.