Contactless angular position detection device

A contactless angular position detection device, comprising:

• a main casing having a through opening formed about a geometric axis;
• a rotary element to which a permanent magnet is fixed, said rotary element being mounted inside said main casing to rotate with respect thereto about said geometric axis;
• an electronic circuit 5 mounted inside said main casing , said electronic circuit 5 including a sensor capable of detecting variations in the magnetic field produced by said permanent magnet when rotating with respect to said main casing;
• characterized in that the contactless angular position detection device further comprises a complementary module including a secondary casing coupled to said main casing by means of respective coupling elements in said secondary and main casings, and electric plug connection means housed in or supported by said secondary casing for connecting said electronic circuit to the outside, said main casing and secondary casing being permanently and tightly linked by attachment means.