1/3PCS Tuya Smart Sound And Light Sensor 100DB 2-in-1 Alarm Battery Usb Dual Power Smart Home Works With Smart Life Description: Product Name： Sound and light alarm Product Size: 72*72*31mm Packing weight: 0.1KG/pc Wireless protocol: 2.4G IEEE 802.15.4 Charging voltage: 5V-1A Operating temperature: -10-55℃ Operating Humidity: 0%-95%RH (Non-condensing) Specifications: 【Graffiti Smart Sound and Light Alarm with USB Power Supply】Experience ultimate convenience and versatility with the Graffiti Smart Sound and Light Alarm featuring USB power supply.   【Intelligent Home Security Alarm】 your home with the smart sound and light alarm system from Graffiti, offering wireless connectivity and easy installation.   【Graffiti Smart Sound and Light Alarm with USB/Battery Power Supply】Enhance your home safety and security with the Graffiti Smart Sound and Light Alarm, designed for modern homes and equipped with USB and battery power supply.   【Versatile Sound and Light Alarm for Smart Homes】Upgrade your smart home with the Graffiti Sound and Light Alarm, a stylish and reliable device that offers wide application and easy integration.   【Wireless Sound and Light Alarm with Connectivity】Stay informed and alerted with the -enabled sound and light alarm from Graffiti, a top-selling and highly-rated home safety device. Package Included: 1*Sensor 1*Data cable 1*Instruction manual