Ketta DT125E New Generation leak detector kit - for indoor and outdoor use pressure pipeline and gas leak detection (for up to 8 m underground)Ketta DT125E New Generation leak detector kit for indoor and outdoor pressure pipeline and gas leak detection For outdoor and indoor and gas detection Depth 8 m measurement range underground max Includes 5 x sensors as below: Sensor 1: optimized for indoor ground detection, lightweight and portable Sensor 2: for detecting narrow indoor spaces such as gaps between objects and walls, providing higher contact accuracy Sensor 3: designed for outdoor