American TIF Halogen Gas Leak Detector TIF5750A Combustible Gas Detector, Combustible Gas Leak Detector, functions normally with self-provided battery, videos and pictures are all real shots. Take it if useful. No battery, not tested when the window is closed, sold as broken. The black outer skin of the probe wire is missing, which does not affect use at all. Sold cheaply, free shipping. No returns for any reason after sale. Please check carefully before placing an order, thank you for your patronage.