Siterwell Smoke & CO Combo Detector Alarm with Voice Speaker, Dual Sensor Fire and Carbon Monoxide Alarm, Auto-Check, Combination Alarm for Office Kitchen, 10-Year, UL 217 & UL 2034, GS886, 2 Pack

[UNIQUE VOICE SPEAKER] Unique audible Smoke & CO Detector Alarm distinguish smoke warning from CO warning. Co Alarm:"Warning, Carbon Monoxide, evacuate!"; Smoke Alarm:"Fire!" The verbal warning system reduces confusion and helps people stay in order. [MINIMIZE COOKING NUISANCE ALARMS] This smoke & carbon monoxide Alarm features photoelectric smoke sensing technology, which detects slow smoldering fires quickly. It is suitable for many places, especially for cooking areas to minimize false alarms from cooking smoke. [NOT-DISTURB MODE] With our detector you don't have to worry about your rest. In low voltage or fault mode, just press the button, the alarm will enter NOT DISTURB MODE, avoid the night siren and frequent light flash, you can enjoy about 10 hours of silence.