A rotation angle sensor includes: (a) a multi-resolver housing with a high precision structure; (b) stator terminals that do not cause deformation or loosening of terminal pins from the substrates to which they are attached; and (3) a signal line connection structure that is not affected by thermal stress. The housing (10) includes divisional housings (10a, 10b), and one resolver is installed in each of the divisional housings (10a, 10b). The divisional housings (10a, 10b) are assembled by aligning respective openings therein in an axial direction. The lead lines of stator windings are connected to printed circuit substrates (51) installed on insulators (20a, 20b), and pins (54) connect the printed circuit substrates (51) to a connecting signal output line via flexible connectors (61, 64).