24/7 Remote Monitoring: Tap into your mobile device to monitor and control your siren and alarms directly from your smartphone or tablet, from anywhere in the world, at any time. The siren is a perfect panic alarm in case of an emergency. Timer Controls: The scheduling feature allows you to set a timer or schedule to sound your alarm, , or sirens at particular of the day, allowing you to automate your whole home security system. 120dB Siren: different siren, chime, and alarm can sound at volumes up to 120dB, with a built-in flashing LED strobe. This siren alarm even has a "Barking Dog" feature to deter suspicious activities. Easy Setup and Installation: Download the free Android or iOS app, add the device, pair with your home wireless network, and you're done No hub or is required Enable scene control and include multiple devices to a -programmed group to operations. Specification: Multiple Sound Power Supply: Mini USB, 5V 1A power supply: CR123A x 2 (not included) Sound intensity: 100 dB Wireless Type: 2.4GHz, 1T1R Protocol: IEEE 802.11b / g / n Wifi distance: 45m Operating Temperature: 0 Celsius ~ 60 Celsius (32 Fahrenheit ~ 104 Fahrenheit) Operating temperature: 20% ~ 85% Storage Temperature: 0 Celsius ~ 60 Celsius (32 Fahrenheit~ 140 Fahrenheit) Storage Humidity: 0% ~ 90% Free app: Tuyasmart or Smart Life. Support : Android and IOS. Colour:White Material:Shell plastic Size:68x 68x30mm Package Contents: 1 * 1 * data line Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.