Security Door Window Entry Burglar Alarm System -magnetic Sensor. Feature: New and High Quality Super Loud 120 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 Warning Door / Window Sticker is Supplied Free in Package Operated by 2pcs of AAA Batteries (Not Include ) Specifications: Sensor Type: Alarm Alarm Type: Sound Material: Plastic Size: 3.6 X 1.2 X 0.7 Inch Package Contents: 10x Alarm Unit 10x Magnetic Sensor . We are an international based seller that will ship your order from abroad, please at least a minimum 14 working days for delivery right now due to the ongoing delays in shipments globally.