Walmeck Independent Fire Alarm Sensor, 85 dB Smoke Detector

It is a fire alarm, alerts and warns people to stay far away from danger field when it detected smoke. Once triggered, the red LED will flash with a high alarm sound, louder than 85dB. Fits for areas like house, shop, hotel, restaurant, office building, school, bank, library, computer house, and storehouse, etc. With the special structure design and photoelectric signal processing technology, it features with dustproof, mothproof and outside light interference. Comes with an alarm test button. Press it after installation, if the buzzer beeps, then it works fine. The photoelectric sensor is designed for early detection from all directions. Easy to install and convenient to use.

• Power Supply: 2 x 9V 6F 22 Batteries (not included)
• Standby Current: ≤10uA
• Alarm Current: ≤20mA
• Alarm Indication: Red LED
• Sound Level: 85dB/m
• Detecting Area: 20 square meters
• Operating Temperature: -10°C +50°C
• Operating Humidity: ≤95% RH
• Item Size: 10.5 x 3.4cm/4.13" x 1.34"
• Item Weight: 69g/2.41oz
• Package Size: 10.6 x 10.5" x 3.6cm/4.17" x 4.13" x 1.41"
• Package Weight: 91g/3.20oz 
• Package List: 1 Alarm
• 2 Mounting Screws
• 1 User Manual