ARITECH pvc abs magnetic contact for surface mounting on metal and non-metal doors. opening 12 mm. grade 3, 2 m cable. supplied with 2 m of 4-core cable. contacts, nc, alarm and tamper. operating gap, 12 mm, on iron doors and 19 mm on the rest. ip67. magnet dimensions: 8x8x40 mm, contact: 54x13x12.5 mm. grade 3 and vds certified.