Gain total confidence in your leak detection. The Testo Gas Leak Detector offers professional-grade methane detection across a wide 50-10,000 ppm range, ensuring comprehensive coverage. With adjustable sensitivity and instant visual and audible alerts, you're always aware of potential hazards. Its extended 18-inch flexible neck means no area is out of reach, while a rugged, ergonomic design and smart auto power-off ensure long-lasting, professional performance on every job.