Item Type: Home Siren AlarmMaterial: ABSColor: WhiteWireless Type: 2.4GHzWireless Protocol: IEEE 802.11b/g/nSound Intensity: 90 dB (maximum)Battery Type: 2 x CR123A (not included) Super Loud: A variety of different sound and alarm options, with volumes up to 90dB, allow you to quickly respond to critical events and protect your family and belongings. LED Flash Light: Super alarm glare light, smart alarm, super loud sound alarm while flashing dazzling RED light to attract attention. Simple Operation: 2.4GHZ WIFI one?key connection, easy setting, no need for home gateway, can easily realize the intelligent control of home appliances. Wide Application: Wireless sound and light alarms can be used for outdoor arming, indoor arming, and emergency arming to facilitate your life. Easy Installation: This siren is easy to install, just add it to the app, then fix it to any stable wall and enjoy a safe life. 1 x Siren 1 x Sticker 1 x Data Cable 1 x Screw 1 x Screw Cover 1 x English ManualThanks