Wireless door and window alarm, door and window anti-theft alarm sensor system

Features:1. New and high quality2. Super loud 90 dB alarm3. Convenience in installation--just peel and stick4. Super environmental suitability and stability5. Dustproof and insect prevention6. Easily mounted by adhesive. Type to window or door. Ideal entry warning for homes, apartments, mobile homes, do rms, offices, hotel rooms, garages, and more!7. Magnetic sensor switch detects entry protecting your home or office whether you are in or out8. Warning door / window sticker is supplied free in package