Range of casings for Telemecanique limit switches, series XCK-L, XCK-M, XCK-S and XCK-J. ZCKL1 metal casing, 1 cable input, N/C + N/O double pole snap action contact. ZCKM1 metal casing, 3 cable input, N/C + N/O double pole snap action contact. ZCKS1 plas