Built by Rothenberger a trusted name in high-performance tools this gas leak detector features advanced semiconductor sensing technology, flexible reach, and intuitive audible/visual alerts to pinpoint even the smallest leaks. Supplied complete with a robust carry case and powered by common AA batteries, it's perfect for HVAC technicians, plumbers, maintenance engineers, and safety professionals alike Detects all common flammable gases including natural gas, propane, butane, methane, acetone, alcohol and more. Audible tic rate + multicolour LED indicators clearly signal rising gas concentrations. 42 cm flexible testing head with integrated lamp reaches into dark and tight spaces. Rugged ROCASE protective case for transport and storage. Powered by 2 AA alkaline batteries (not included), no charger needed. Rothenberger Rotest 4 Electronic Gas Leak Detector & Case (MPN: 1000003351) professional combustible gas detector with flexible probe, audible and visual alerts, integrated lamp, and durable protective case. Powered by 2 AA batteries. Ideal for locating the smallest pipe leaks to ambient gas presence. Includes ROCASE carry/storage case