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Features:
Photoelectric smoke sensor
Built-in sounder
Built-in fixed temperature/rate-of-rise heat sensor
Learn mode technology
Tamper switch
Field-replaceable optical chamber
LED shows visual status
Drift compensation increases immunity to dust
Large test and silence button
Clean Me™ self-diagnostics feature performs a daily full diagnostic test
Specifications:
40°F to 100°F operating temperature
Two 3-Volt DC lithium batteries (included)
Sensitivity 2.3%±0.8%
Drift compensation adjustment: 0.5%/ft max.
5.5 Inch diameter x 2.3 Inch deep (detector)
4.88 Inch diameter x 0.38 Inch deep (base)
6.5-year battery life
UL 217 (Residential) listing - PN 60-848-01-95(ITI)/NX-491T
Accessories:
60-733 3-Volt DC 2/3 A lithium battery - 6/pk
211 Replaceable optical chambers for ESL smoke detectors - 10/pk
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