Material: ABS Key benefits Immediate audible deterrent: when the sensor detects an unlawful hit or impact on a window, door or cabinet, it emits a strong alarm sound to alert you and scare off intruders. Simple, fast installation: the door/window sensor mounts easily with included adhesive — no tools or wiring required. Reliable operation: a builtin battery indicator shows when power is low so you can batteries before the alarm fails. What it does Impactactivated window and door security alarm that sounds on contact with a window, door or cabinet surface. Compact sensor and alarm unit adheres to the surface and triggers a loud alarm when struck or jarred. Key attributes Material: durable ABS housing. Mounting: adhesivebacked for convenient installation on windows, doors or cabinets. Function: impact detection with strong audible alarm. Maintenance: visible battery indicator to signal when replacement is needed. Practical applications Home windows and doors: mount on bedroom or groundfloor windows and doors to deter breakins and notify household members. Offices and counters: protect backoffice doors, display cabinets or cash counters where unauthorized access or tampering is a concern. Cabinets and storage: secure medicine cabinets, liquor cabinets or other storage that should remain locked or monitored. Why customers choose this product Easy to install and use without tools or setup. Clear visual battery indicator reduces the risk of unexpected power failure. Suitable for multiple locations (homes, offices, shops) to improve everyday security. Included functions (as specified) Window security alarm: emits a strong alarm sound when the protected surface is unlawfully hit. Door sensor alarm: adhesivemounted sensor for convenient placement on doors or windows. Battery indicator: lets you know when to batteries to maintain protection.