Loud Alarm - Super loud alarm, super environmental suitability and stability, the magnetic sensor switch detects entry, protecting your home or office whether you are indoors or outdoors. One-Click Settings - Features a convenient on/off switch, so you can turn the alarm OFF when you do, entry warning ideal for homes, apartments, mobile homes, offices, hotel rooms, garages, and more. Easy to install - easy to mount with tape, stick it on the window or door, then you're done. No wiring, screws or tools required Completely DIY. Ideal Choice - This door window alarm adopts the latest technology, it can be triggered as soon as the doors or window are opened without being informed. It is a good choice to keep you and your property safe. Wide Applications - With a simple appearance, these alarms can be easily placed where you need them. Ideal for attaching to house doors, all types of apartments, cabinets or desks, place them wherever you want.