Snap-outdoor, indoor junction box is mainly used in telephone cable network backbone and user extension of the sub-line equipment, specifications 5-100 pairs. Specifications: junction box into the line using a terminal clip airtight wiring methods to ensure that contacts are not exposed core wire, the contact reliability. Outlet junction box with screw pressure card, do not cut artificial stripping insulation, operation, maintenance and convenient. Contact point with organic grease seal, corrosion resistance, waterproof, moisture-proof, safe and reliable. Junction box shell polycarbonate molding, cable access hole with a seal ring, seal. Contact resistance ≤ 3mΩ insulation resistance ≥ 5 × 104MΩ Dielectric strength 50HZ, 500V AC voltage 1min without breakdown or arc phenomena