Product description?Waterproof and flame retardant switch box Contact action: instantaneous (normally closed or normally open) Contact resistance? ? 50m? Mechanical life: self-repeating knob more than 1 million times, the rest more than 100,000 times Electrical life: AC 100000 times or more Short circuit protection: RT16-10A Waterproof design, material use flame retardant material, the top increase protection cover to improve the level of equipment protection performance up to IP67 level good insulation, waterproof, flame retardant ability Open terminals without pre-loosening screws for faster installation and wiring Easy and fast installation, easy wiring, quality assurance and long service life