2 In 1 Tuya Smart Life Wireless WiFi Siren Alarm Sensor Sound And Light Alarm Siren Support Alexa Google Home For Home Security Mobile APP remote alarm memory Anti-dismantling design in dedicated safety field Low voltage monitoring prompt function Wireless transmission signal, easy to install Send regular online reports about the gateway When the detector is activated, it will immediately send a audible and visible alarm to deter intruders. Users can also implement APP out-of-home alert, home alert, cancel alert, emergency alarm and other operations to achieve control of wireless sound and light alarm. When the siren is used, it must be used in combination with the gateway, through the APP parameter realize the control of the wireless sound and light alarm. The communication of the whole system approves wireless transmission, which makes the installation of the product convenient and cutting Specifications: WiFi USB Siren Alarm Power supply: Mini USB , 5V-1A Backup power supply: CR123A x 2 (optional) Sound intensity:120 dB Wireless Type:2.4GHz, 1T1R Protocol:IEEE 802.11b/g/n Wireless Range:45m Free app:Tuyasmart or Smart Life. Support systems: Android and IOS Package Included: 1 x Alarm Siren, 1 x USB Cable, 1 x Manual When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!