Intelligent Protection: This intelligent alarm system helps secure doors and windows in your home. With a set of 4 alarms, it provides reliable security coverage for various areas such as the front door, balcony, garden, bedroom, and windows. 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. Practical Design: Compact and discreet, the alarms feature a sleek white design that blends seamlessly into any room without affecting interior aesthetics. Note: Ensure proper installation conditions to avoid false alarms. The gap between the magnet and sensor must not exceed 10 mm for correct operation. Specifications: Transmitter dimensions: 9 x 3 x 2 cm. Receiver dimensions: 5 x 1 x 1.5 cm. Each unit operates on 2 x 1.5V AAA batteries (included) and produces an audible alarm of 100dB. Package includes 4 wireless alarms, 4 magnetic sensors, and 8 AAA batteries.