The pipe extension is an optional feature that is attached to the SmartBob2 mount. The pipe extension keeps the sensor probe from being pulled up into a standpipe, functions as a bushing, and keeps the cable from fraying on sharp objects. It also functions to keep the sensor probe flush with the vessel top. The extension pipes are available in CPVC, galvanized, or stainless steel. They are available in custom lengths from 4 inches to 20 feet.