| http://www.w3.org/ns/prov#value | - Since the sensor point number designating circuit and the density adjusting circuit for adjusting the detection level (or change in the density) are provided, the sensor circuit according to the invention is protected against erroneous operation even when a small animal such as a bird, dog, cat or the like contacts a number of the sensor points or even when a cloud, smoke or the like of a size cor
|
