An electronic control board for supplying control signals including an activation signal to a controlled device in response to a detection signal created by a sensor comprises an on delay timer, a run timer, and an off delay timer. The on delay timer must time out before an activation signal is sent...http://www.google.com/patents/US6701194?utm_source=gb-gplus-sharePatent US6701194 - Control board for controlling and monitoring usage of water
Control board for controlling and monitoring usage of water
