|The AccuTrak® VPE Standard Kit offers literally twice the functionality of the Basic Kit with the addition of the AccuTrak® Touch Probe and Waveguide. Utilizing the Touch Probe, the VPE can troubleshoot thermal expansion valves in less than 5 minutes, and find faulty steam traps in just seconds! The Touch Probe can also be used to detect worn bearings and faulty valves. With the Waveguide attachment a technician can gain better access to hard-to-reach places and better determine the location of leaks that would otherwise be inaccessible. This is our most popular kit for a reason!