Features 1、【Compact Wireless Door Sensor】: This mini smart door and window detector is a compact and exquisite wireless door magnet sensor. It/u0027s designed to be small and unobtrusive, making it a perfect fit for any door or window in your home or business. 2、【Anti-Tamper /u0026 Low Voltage Alarm】: The detector features an anti-tamper alarm and a low voltage alarm. It/u0027s powered by a button battery and is easy to install. It ensures your property/u0027s security by alerting you when the door or window is tampered with or when the battery is low. 3、【Real-Time Alerts】: The detector works by triggering an alarm on the main unit when a door or window is opened. It sends real-time alerts via SMS, mobile APP, or phone call, keeping you informed about the security status of your property at all times. 4、【360° Protection】: This detector provides 360° protection. It/u0027s suitable for detecting doors, windows, drawers, safes, and any other objects that can be opened or closed. It/u0027s ideal for homes, schools, factories, hotels, shops, and companies. 5、【Easy Installation /u0026 Long-lasting Battery】: The detector is easy to install with the provided double-sided adhesive tape. It/u0027s powered by a CR2032 lithium battery, offering long-lasting durability. The working temperature ranges from -10 to 55 ℃, ensuring reliable performance in various environments. Features: 【Compact Wireless Door Sensor】: This mini smart door and window detector is a compact and exquisite wireless door magnet sensor. It's designed to be small and unobtrusive, making it a perfect fit for any door or window in your home or business. 【Anti-Tamper & Low Voltage Alarm】: The detector features an anti-tamper alarm and a low voltage alarm. It's powered by a button battery and is easy to install. It ensures your property's security by alerting you when the door or window is tampered with or when the battery is low. 【Real-Time Alerts】: The detector works by triggering an alarm on the main unit when a door or window is opened. It sends real-time alerts via SMS, mobile APP, or phone call, keeping you informed about the security status of your property at all times. 【360° Protection】: This detector provides 360° protection. It's suitable for detecting doors, windows, drawers, safes, and any other objects that can be opened or closed. It's ideal for homes, schools, factories, hotels, shops, and companies. 【Easy Installation & Long-lasting Battery】: The detector is easy to install with the provided double-sided adhesive tape. It's powered by a CR2032 lithium battery, offering long-lasting durability. The working temperature ranges from -10 to 55 ℃, ensuring reliable performance in various environments. Specifications: Power Supply: DC 3V (CR2032 lithium battery x1) Standby Current: <8uA Alarm Current: <15mA Transmission Distance:<80m (open area/no interference) Radio Frequency: 433Mhz Working Temperature: -10~55 ℃ Quantity: 2 Pack, 4 Pack (optional) Magnetic Sensor Size: 5 * 2.6 * 1.2cm/2 * 1 * 0.5inch Magnetic Stick size: 3.5 * 1.2 * 1.2cm/1.4 * 0.5 * 0.5inch Note: The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. Please allow slight manual measurement deviation for the data. Packing List: 4 x Magnetic Sensor 4 x Magnetic Stick 4 x Double-sided Patch Package List 4 x Magnetic Sensor 4 x Magnetic Stick 4 x Double-sided Patch