Smoke Alarm, Photoelectric Sensor, 85 dB @ 10 ft Audible Alert, (2) AA Batteries, FIRST ALERT, Mfr# SA511B

Smoke Alarm, Battery Chemistry Alkaline, Battery Location Side, Battery Locking Pin Yes, Battery Size AA, Communication Protocol Wireless, Compatible With BRK Wireless Interconnect Alarms, Detector Type Smoke Detector, Features Wireless Photoelectric Battery Smoke Alarm, 10 year limited warranty, 915MHz with 65K security codes and 3 channel hopping, Includes (2) AA Batteries, Number of Tandem Detectors 18, Power Source Removable Battery, Sensor Type Photoelectric, Visual Alert Type LED