S Series buttons are manufactured according CE safety certification requirements, meets IEC947, EN60947, CCC China and GB14048.5-2001 standards.

Button mounting method adopts cap-nut locking structure, provides good antifouling and water-resistance function. Contact switches uses modular and closed structure, avoid direct finger contact causes electric shock. Every component is internationally self-locking joined fasteners, easy accessibility, safety and reliability. With anti-shock screw terminals which provides firm position but easy installation.