This listing is for one D4N-412G limit switch from the D4N series. The switch uses a snap-action operating mechanism with an adjustable roller lever (metal lever, resin roller) suitable for mechanical position sensing and safety-door applications.

• Actuation: Snap-action mechanism with an adjustable roller lever; metal lever with a resin roller for rolling contact.
• Roller size: Roller approximately 17.5 mm diameter 6.8 mm width (as listed in supplier/distributor references).