INFICON D-Tek 3 Leak DetectorINFICON D Tek 3 Leak Detector 721202G21 This INFICON 721202G21, D Tek 3 Leak Detector builds on the proven performance of D TEK leak detectors with added features to help you get your job done faster. An easy to change sensor, quick charge lithium ion battery, and a new ergonomic design make D TEK 3 a versatile tool for everyday RAC maintenance and repair. Plus, a new optional CO2 sensor (724202G2) gives you two instruments in one. Upgrade your