Recessed magnetic contact. EN50131 Grade 2 certificate. Opening distance 17 mm. Incorporates tamper with micro switch. Terminal with 4 terminals for connection, does not require connection box. Selectable final line resistors. It can be configured as double contact. It can be used in double leaf doors. Environmental class II. White color. Casing size: ø 20 x 32 x 33 mm.