Sd13 smoke alarm key features: * worry-free! 10-year sealed-in lithium battery * advanced photoelectric sensing technology offers high sensitivity * auto-check malfunction * low battery warning * manual test & auto-reset * dustproof, mothproof & anti-visible light * anti-rfi (20v/m-1ghz) Sd13 smoke alarm specifications: * sensor type: photoelectric * alarm sound: >85db (3m) * power supply: dc 3v lithium battery (included) * power supply life: 10 years * alarm current:
