Adjusts its smoke sensitivity to better discriminate between a real hazard and a false one.\\nFeatures\\n - 2 AA batteries (included)\\n - Electrochemical sensor\\n - 85 dB at 10'\\n - 5 3/4" x 1 11/16" \\n - 13 oz \\n - 10-year warranty\\n - 1/Each Model Number: KN-COSM-XTR-B |UOM: EA