Product Name: Optical TransmitterModel Number: WL-AMTX-3120Place of Origin: ChinaFeatures: 1) Low input RF level 2) ALC/MGC switch 3) Pre-distortion circuit 4) CPU monitor control the working statues 5) LCD shows the working status and the alarm message 6) Cut off the optical power automatically when the working is abnormal 7) Pre-settled the RS232 port for the monitoring status through remote computer 8) With RF Test Port