Features: 1Alarm System: It is equipped with a variety of different bell and alarm options with a volume of up to 105dB and a built in flashing LED flash. 2Sound and Light Alarm: Super alarm glare lamp intelligent alarm sound alarm flashing dazzling red light at the same time full of power. 3Easy Setting: 2.4GHz WiFi one button connection simple setting no need for home gateway can easily realize the intelligent control of home appliances simple operation and convenient use. 4Stable Performance: 2.4GHz protocol is more stable faster and more convenient. It is made of high quality ABS material which is durable. It can be used outdoors and is not easy to be damaged. 5Widely Use: It can be used for outdoor defense indoor defense and emergency defense which is convenient for your life. Widely used in families factories schools shops residential areas and so on. Specification: Item Type: Home Security AlarmMaterial: ABSWeight: Approx. 100g / 3.5ozWireless Type: 2.4GHzWireless Range: 45 MetersVolume: 105 dBWireless Protocol: IEEE 802.11b / g / nSound Intensity: 105 dB (Max)Battery Type: 2 x CR123A (Excluding)Operating Temperature: 0-40 Working Humidity: 20-85%Support: for IFTTT for Rokid for Tmall Genie Package List: 1 xHome Security Alarm 1 x Sticker1 x Screw1 xExpansion Screw1 x USB Cable1 x English Manual