Features: 【Enhance Home Security】: The Tuya Smart WiFi Door and Window Sensor is an essential component of any reliable home security system. With its immediate sound and light alarm, it effectively deters potential thieves and alerts neighbors or security personnel nearby. 【Convenient Remote Monitoring】: Stay connected and in control with the accompanying mobile app. Easily check the status of your doors and windows, ensuring they are securely closed at all times. Receive instant push notifications on your phone when any unauthorized access is detected, providing you with peace of mind even when you're away from home. 【Customizable Alarm Settings】: Adjust the alarm volume according to your preference, ensuring it suits your specific needs. The door sensor offers a high-decibel alarm sound that exceeds 100dB, guaranteeing that any intrusion will not go unnoticed. 【Versatile and Easy-to-Install】: The Tuya Smart WiFi Door and Window Sensor is suitable for various applications, including doors, windows, drawers, filing cabinets, and safes. Its wide compatibility makes it a versatile choice for securing different areas of your home. Installation is quick and hassle-free, allowing you to set up your home security system effortlessly. 【Energy-Efficient and Long-lasting】: Powered by two AAA batteries(without battery), this sensor is designed to be energy-efficient and long-lasting, ensuring continuous conservation without frequent battery replacements. With its low power consumption and convenient battery operation, you can enjoy the benefits of a reliable home security solution without unnecessary hassle or additional costs. Specifications: Quantity: 2 Pack, 4 Pack (optional) Working Voltage: DC3V Static Current: ≤120μA Alarm Current: ≤ 20ma Alarm Sound>100dB WiFi Standard: IEEE 802.11 b/g/n 2.4GHz Magnetic Sensor Size: 90.5 * 37.5 * 21.5mm/3.6 * 1.5 * 0.8inch Magnetic Stick size: 57.5 * 17.5 * 17mm/2.3 * 0.8 * 0.7inch Note: Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Packing List: 4 x Magnetic Sensor 4 x Magnetic Stick 4 x Double-sided Patch 1 x Instructions