The instruction manual for optical transmitter is given by Yantai yunpan international trade Co.,Ltd.. Packing a carefully-compiled and well-printed manual with detailed descriptions about the use, installation, and maintenance methods along with the product, we aim to provide customers with a satisfying experience. On the first page of the manual, step-by-step sum-up regarding installation, use, and maintenance is clearly shown in English. Furthermore, there are some exquisitely-printed pictures displaying every part of the product in detail. You can also ask our staff for the Electronic version of the manual and they will send it through e-mail.

YUNPAN supplies high quality and high cost-performance ratio epon onu to give exceptional customer care. YUNPAN's switch equipment series contains multiple sub-products. This product has a high-performance optical lens which can stop the light from scattering in many directions and direct the light into a narrow beam so as to improve the brightness. It keeps stable under a wide range of operating temperature. YUNPAN continuously creates good results in the field of transmission equipment. The product has high signal receiving or sending sensitivity.

We hold honesty and integrity as our guiding principles. We firmly refuse any illegal or unscrupulous business behaviors which harm people's rights and benefits.