Essential Notes Before Using Telephone Optical Terminal

**To our users:
**(1) Thank you for using our products. This equipment has good and reliable performance within its designed scope of use, but human-caused damage or destruction should still be avoided. Please read this user manual carefully before using this product, and keep it properly for future reference.
(2) Please verify the model before installing this product, and install it in accordance with the requirements of the user manual.
(3) Do not expose this product to rain or moisture to avoid damage.
(4) Do not place anything on the power cable, and do not knot or wrap the cable.
(5) The power connector and other equipment connectors should be firmly connected to each other; please check them frequently.
(6) Please keep the equipment clean, and wipe it with a soft cotton cloth when necessary.
(7) Please be careful not to block the ventilation and heat dissipation holes.
(8) Please do not repair the equipment yourself, except where explicitly indicated in the manual. When the equipment operates abnormally, disconnect the power immediately and contact the company's after-sales service department.