APPARATUS AND METHOD FOR AUTOMATICALLY DE-ENERGIZING ELECTRICAL OPERABLE EQUIPMENT IN RESPONSE TO A LACK OF ANIMAL ACTIVITY FOR A PREDETERMINED TIME INTERVAL

摘要

An apparatus and method for automatically de-energizing electrically operable equipment in response to a lack of animal activity, such as human activity, in a specified environment during predetermined time period. The apparatus utilizes a circuit which is designed to detect activity which generates energy in a certain wavelength range and particularly, sonic energy. If sound is sensed in the specified environment within the predetermined time interval, a signal is generated to energize or maintain energization of one or more electrical devices, Contrarywise, if no sound is detected within the predetermined time interval, there is a resultant de-energization of the electrically operable equipment. A control may be provided to adjust the predetermined time delay period. A control may also be provided for adjusting the sensitivity of the device.