The utility model provides a wide operating temperature range's many rings of magnetoelectric encoder, includes that pivot, shell, bearing, magnetism coding disc, circuit board, hou gai, welding paster switching mode hall sensor and two on the circuit board cut straightly switching mode hall sensor. Pivot and bearing inner race fixed connection, outer shell is in pivot and the bearing outside, andbearing inner race fixes in the shell, and the magnetism coding disc is fixed in the bottom of pivot, and the pivot is connected with external drive mechanism. Paster switching mode hall sensor arranges that an i paster switching mode hall sensor is located projection department of a magnetism coding disc i magnetosphere on the circuit board on same straight line crossing circuit board center oneside, and the circuit board is fixed on the shell, and the back lid is used for the bottom opening of can. The utility model discloses a hall sensor realizes many circles and measures, obtains rotation angle, the direction of rotation of pivot, and the precision does not receive temperature, has the operational temperature range of broad, and the reliability is high, simple structure.