This document advertises and provides specifications for the Tap Detector Pro, a device that monitors telephone line voltage and detects wiretaps or bugs. It can detect common wiretapping techniques and issues warnings. The Tap Detector Pro is available to rent for $75 per week or purchase with a lifetime warranty. The company, DPL-Surveillance-Equipment.com, also offers various other surveillance and security equipment for purchase or rent including bug detectors, hidden cameras, and metal detectors.