ขาย Wireless House Security Door Window Entry Burglar Alarm System Magnetic Sensor ราคาที่ดีที่สุด

Feature 100% New and high quality 70-80 dB alarm Convenience in installation--just peel and stick Super environmental suitability and stability Dustproof and insect prevention Easily mounted by adhesive. Type to window or door. Ideal entry warning for homes, apartments, mobile homes, dorms, offices, hotel rooms, garages, and more! Magnetic sensor switch detects entry protecting your home or office whether you are in or out Specifications: Sensor type: alarm Alarm type: sound Material: plastic Color: White Size: host: about 92mm*31mm*18mm, accessory: about 50mm*14mm*13mm Operated by: 2 x AAA batteries (Not include) Installation method: 1. Fix the host to the door/window by double-sided adhesive, 2. Stick another bar magnet to the door frame with a straight line along the host tip line. 3. When checking the settings, turn the host switch to the ""ON"" position. 4. Open the door and check if the alarm sounds a siren. Package Contents: 1 x Alarm Unit 1x Magnetic Sensor Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement.