Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA,

Dimensions (Overall): 2.25 inches (H) x 7.26 inches (W) x 11.2 inches (D)
Weight: .79 pounds
Battery: 2 AA Alkaline, Required, Included
• Voice Alarm u2013Announces the hazard type detected thereby helping to speed up the correct reaction to the hazard detected. Alarm announces u201cFire!u201d when a smoke or fire hazard is detected and announces u201cWarning Carbon Monoxideu201d when a CO hazard is detected
• Combined Carbon Monoxide and Smoke Alarm u2013 A single unit can be installed where previously, two were needed. Reduces installation time and helps to keep home du00e9cor attractive.
• Tamper resistant lock
• Battery - Provides protection even during power outages when many fire and carbon monoxide incidents occur. The unit warns of a low battery condition by announcing u201clow batteryu201d and by initiating an alarm chirp and activating a flashing red LED. The battery door will not close unless the batteries are properly installed. Note : The date printed on the item is manufacturing date,not the expiration date. Refer to the PDF attached below in Technical Specification for Manual.
• Voice Announcements - Hush Feature temporarily silences nuisance alarms with u201cHUSH MODE ACTIVATEDu201d and u201cHUSH MODE CANCELLEDu201d voice announcement. If the alarm had detected a CO level of 100ppm or higher, the unit will announce u201cCARBON MONOXIDE PREVIOUSLY DETECTEDu201d to warn of the CO incident, when the Test/ Reset button is pressed.Temperature Range:40u02daF (4.4u02daC) to 100u02daF (37.8u02daC).Voltage (volts):4.5
Kidde 21026043 Battery-Operated(Not Hardwired) Combination Smoke/Carbon Monoxide Alarm with Voice Warning KN-COSM-BA. Interconnects - No.