Features: Sensitivity Detectparticlemail: Hard wearing advanced photoelectric detecting technology, this exhaust transducer quickly identifies exhaust existence, reducing false alarms and ensuring accurate detection for early flame alerts. Powerful Sound & Light Alaremove: Features a 88dB loud alarm and flashing LED light, providing double alerts to effectively wake persons in profound sleep otherwise noisy conditions, enhancing security awareness. Long Battery Lifemail: Constructed with a high efficiency lifepo4 battery Fly & Dirt Security: Innovative against fly net plan prevents dirt and small arthropods from entering the transducer, maintaining device sanitation and extending its functional existence. Radio & Easy Installatparticlemail: Radio plan allows bother complimentary installation lacking complex wiring, making it flexible. Specifications: Substancemail: ABS, PCB, Metal Product Sizemail: 102x102x37mm Product Weigheigheight: 160g Colorebog: White Transducerebog: Double disseminator single receiver Powerebog: CR123A battery, service life of decennium Greatest detection distancemail: 40m Detection Cornerebog: circuit° Alarm capacity: 88dB (within distance) Package Includes: Unattached high sensitivity wireless exhaust detector fire alarm, battery, instruction manual, fixing rack, packaging box note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!