Construction installation requirements：
1, such as the scene need forcible entry cables, must be carried out in accordance with the requirements binding waterproof processing.
2, the signal line extension cord sheath is strictly prohibited to replace, must use gb super five kinds of cable, signal transmission requirements is the purity of copper, rather than the wire diameter).
3, all wiring must be hung tin processing, avoid generating hung tin surface after long time use copper oxidation phenomenon, lead to signal jitter.
4, all installation, including the bandage thrum, must use neutral glue, prevent acid corrosion phenomena.