LS20M51B11-P01 is a compact limit switch, 30 mm wide, made of zinc alloy (Zamak) material, with 2 top mounting holes, a pre-wired IEC 20/22 II - PVC cable (1 m) on the side, adjustable plastic roller lever actuator (í˜18 mm), and 1 NO + 1 NC snap-action contacts (Zb type)