Barrier coverage is an important issue aiming at finding a set of sensors from a given wireless sensor network for detecting the illegal crossing of a boundary. A large number of algorithms have been proposed for prolonging the network lifetime. However. most of them assumed that each sensor is battery powered and the Boolean Sensing Model (BSM) is applied. https://www.ngetikin.com/hot-mega-Ventilationstejp-50-mm-Fresh-flash-find/