A method and device to equalize a signal received by a receiver after having traveled through a transmission channel, the signal including one data block and several probes located on either side of the data block. And therefore, it is possible to measure a height of a target object which exceeds an available height of measurement by each of the first and second lighting devices, as well as, more accurate and reliable height may be obtained. A continuous perimeter zipper with two zipper closure tabs allows versatility in opening an exterior portion apart from a main portion while preventing the exterior portion from being separated apart from the main portion. The advertising dashboard may also include personalized information such as hotlinks to customized web pages.