This document provides the product specification for an optical link selector made by Guilin GLsun Science and Tech Group Co., LTD. The optical link selector has 16 input channels and 2 output channels, supports wavelengths of 1310nm and 1550nm, has an insertion loss of 0.6dB or less, and can automatically switch between optical links. It is used for applications such as optical transmission system monitoring, optical fiber testing, and data security monitoring. The selector has features such as low loss, fast switching, dual power supplies, an LED display, and remote management via WEB and SNMP.