T-mack Home Security System Smoke Alarm Detector Ionization Sensor Heat Fire Alert Hardwired With 9V Backup Battery US Plug

Features: Help to alert you to potential fire dangers by detecting the presence of smoke and heat in the atmosphere. It built in 9v battery backup,low power consumption, long service life. Designed to use inside a single family home,for security guard. It is so practical and professional for daily using. You can get the security alerts at the first time. Description: A dust cover that protects the internal sensor from airborne contaminates that may take flight during a fire or a construction job. Strong adaptability for multi circumstance. Excellent stability, high sensitivity and high performance. Specifications: Size:10.2*10.2*2.7cm Package Size:11*11*3.5cm Color:white Plug:US Plug Voltage: 9V Alarm Signal:85db(3 meter) Package includes: 1 x Smoke Alarm With Built in 9V Battery 1 x Mounting Screws Set

Help to alert you to potential fire dangers by detecting the presence of smoke and heat in the atmosphere. It built in 9v battery backup,low power consumption, long service life. Designed to use inside a single family home,for security guard.