The cleansweepsupply.com product catalog, Smoke Detectors. http://www.cleansweepsupply.com/pages/subsection1139.html Two-alarm system features a loud volume voice warning: "Fire, Fire!" or "Warning! Carbon Monoxide!" Low-battery indicators include "Low Battery" announcement, chirp signal and flashing LED. Test/reset button. Uses three AA batteries (included). Battery: 3 AA; Height: N/A; Maximum Height: N/A; Minimum Height: N/A. http://www.cleansweepsupply.com/pages/item-kid9000102.html KID9000102 58.16 Kidde new http://www.oppictures.com/singleimages/240/KID9000102_2_1.JPG KID9000102 00784908010209 Well Being, Safety & Security Smoke Detectors 86 http://www.cleansweepsupply.com/pages/item-kid9000102.html Front loading so you can change batteries without removing from mounting bracket. Tamper-resistant locking feature. Hush features silences nuisance alarms. Requires 9V battery (incl.). Test/reset button tests all functions including battery. Test Buttons. Detector Type: Smoke Detector; Power Source(s): 9V Battery; GL08 Old Page: 1403; Global Product Type: Smoke/CO Detectors. http://www.cleansweepsupply.com/pages/item-kid09769997.html KID09769997 20.55 Kidde new http://www.oppictures.com/singleimages/240/KID09769997_1_1.JPG KID09769997 10047871056726 Well Being, Safety & Security Smoke Detectors 126 http://www.cleansweepsupply.com/pages/item-kid09769997.html Up to 10-year battery life. Hush feature to silence nuisance alarms. Battery back-up (9V battery included). Test button. Quick-connect power harness. Test Buttons. Detector Type: Smoke Detector; Power Source(s): Lithium-Ion Battery; GL08 Old Page: 1403; Global Product Type: Smoke/CO Detectors. http://www.cleansweepsupply.com/pages/item-kid9000136.html KID9000136 26.79 Kidde new http://www.oppictures.com/singleimages/240/KID9000136_1_1.JPG KID9000136 10047871901361 Well Being, Safety & Security Smoke Detectors 219 http://www.cleansweepsupply.com/pages/item-kid9000136.html