An apparatus for switching connectivity of fans to be sensed includes a primary control board (2) and a secondary control board (4). The secondary control board is connected to the primary control board via sensing lines (3) and control lines (5), and connected to the fans via sensing lines. The secondary...http://www.google.fr/patents/US7796525?utm_source=gb-gplus-shareBrevet US7796525 - Apparatus and method for switching connectivity of objects to be sensed
Apparatus and method for switching connectivity of objects to be sensed
