Limit switch body ZCKJ, rotary head w/o lever, fixed, 2C/O, snap, M20. range of product: OsiSense XC – series name: standard format – product or component type: limit switch body with spring return rotary head – device short name: ZCKJ – body type: fixed – product compatibility: XCKJ – contacts type and composition: 2 C/O – contacts material: silver plated contacts.