2.4 GHz WiFi One-Key Connect for Easy Setup. No home gateway required—enables intelligent control of home appliances with simple, user-friendly operation. The 2.4 GHz protocol ensures stable, fast, and reliable connectivity. Detects door or window status: sends a push notification to your smartphone when the door or window is opened or closed. Supports联动 alarm scenarios (e.g., “Away Mode”): triggers alerts and notifications upon unauthorized entry; compatible with optional IP cameras (not included) to record video. Can be set to automatically turn on lights when a door is opened. Remote control via mobile app—manage your home anytime, anywhere. Compact and easy to install: adhesive mounting allows flexible placement on doors, windows, drawers, and more—no damage to furniture or interior surfaces. Specifications: Input Voltage: 3 V (LR03 battery) Standby Current: 45 µA Alarm Current: 130 mA Low-Voltage Warning: 2.4 V WiFi Standard: 802.11 b/g/n Magnetic Sensing Distance: 15 mm Battery: DC 3 V LR03 (AAA) battery (not included) Alert Method: Mobile app push notification (Smart Life / Tuya Smart) Dimensions: Sensor Unit: 68 × 23 × 19 mm Magnet: 43 × 10 × 14 mm Package Includes: 1 × Door/Window Sensor 1 × User Manual 1 × Adhesive Mount