B7054-42-90 / 54-42-90 SENSOR O2 FOR MULTIVISION MultiVision Multi-Gas Detector MultiVision Multi-Gas Detector may be the new standard for inexpensive and reliable gas detection. Loaded with features yet simple to operate, this great value is also rugged and durable. It has four independent sensors for the detection of oxygen, combustible gas, carbon monoxide and hydrogen sulfide. Durable and impact-resistant chrome plated ABS case is rated to IPX5/IPX7 against water ingress (immersible). Sleek, tapered design fits easily and comfortably in hand. Single MODE button controls all daily functions including initiation of the automatic calibration sequence. Can be purchased with interchangeable alkaline (3 AA) or rechargeable NiMH battery packs.