1. [Intelligent Protection]: This intelligent alarm system helps secure doors and windows in your home. With a set of 4 alarms, it provides reliable coverage for various areas such as the front door, balcony, garden, bedroom, and windows. 2. [Easy Installation]: No tools or wiring are required. Simply attach the alarm to a window sill or door frame using the included adhesive strips. The magnetic sensor activates the alarm when the door or window is opened. 3. [Practical Design]: Compact and discreet, the alarms feature a white finish that blends seamlessly into any indoor environment without affecting room aesthetics. 4. [Note]: Ensure proper installation conditions to avoid false alarms. The distance between the magnet and the sensor must not exceed 10 mm for correct operation. 5. [Specifications]: Transmitter dimensions: 9 x 3 x 2 cm. Receiver dimensions: 5 x 1 x 1.5 cm. Each alarm operates on 2 x 1.5V AAA batteries (included) and produces a 100dB sound. Package includes 4 wireless alarms, 4 magnetic sensors, and 8 AAA batteries.