Broad-band combustible gas detection to provide the highest level of safety assurance. Automatic warm up. Includes its own rechargeable Ni-Cad batteries for years of use. Re-charger and ABS carrying case included. The unique flexible 15" stainless probe allows you to access hard to reach places Need to test for the presence of combustible fumes or gases? The 8800A is MSHA approved and UL Classified. Features automatic warm-up and is ideal for a tremendous range of uses and is invaluable for safety in many applications. Has a low battery indicator.