Descriptions of Kidde 0915E provided by its distributors.
KIDDE 0915E Smoke Alarm, Ionization, 9V. More details: Smoke Alarm, Detection Method Ionization, No Interconnection Capability, Power Source 9V, Audible Alert 85dB @ 10 ft., Horn, Visual Alert Red LED, Diameter 5 In., Height 1-3/4 In., Digital Readout No, Battery Backup No, Features Test Button, Intermittent Red LED, Hush Button No, Locking Pin Yes, Operating Temp. 40 Degrees to 100 Degrees F, Standards UL, NFPA, Federal Housing Authority, Housing and Urban Development and California State Fire Marshal Guidelines