Holiday Detector spy, exported and supplied by us is an optimum quality device, which is used to lessen the effects of oxidation. This is designed to detect the presence of defects as well as holidays in the non-conductive coatings. This is provided to reduce the effects of oxidation. It detects the defects by generating a voltage potential on the electrode. The output voltage of the Holiday Detector spy can be influenced by the moisture on the pipe, weather conditions, and improper soil conditions as well as grounding.