Compact door and window sensor alarm with four selectable modes for flexible security and convenience. Easy button operation lets you switch modes quickly to match different situations. Built to alert you when an entry point opens and to deter unauthorized access with a powerful audible alarm. Key benefits Four operation modes: normal alarm, continuous alarm, door closing reminder mode, and doorbell mode to cover a range of needs. Simple mode switching: onetouch button operation makes changing modes fast and intuitive. Loud deterrent: 110 dB alarm sound triggers immediately on abnormal opening to help deter intruders and draw attention. Smart convenience: low battery alert notifies you when power is low, and the unit automatically restores to normal alarm mode for reliable operation. Quick installation: stickon sensor uses supplied doublesided adhesive for tool mounting in minutes. Features and performance Function: detects opening of doors, windows, cabinets, or other closures and responds according to the selected mode. Compatibility: suitable for interior doors, windows, cabinets, mailboxes, garage doors, and office or hotel room entrances. Design: compact, unobtrusive housing for discreet placement without visible wiring or complex setup. Reliability: immediate alarm response and continuous alarm option when sustained alerting is required. Typical use scenarios Child safety: place on lower cabinets or windows to alert caregivers when a child opens a restricted area. Mailbox and delivery alerts: mount on a mailbox or parcel cabinet to know when items are delivered or retrieved. Property security: use on apartment doors, office cabinets, hotel room doors, or garage entries to detect unexpected openings and sound a loud alarm. Installation and operation No special tools required. Clean the mounting surface, apply the doublesided adhesive to the sensor, position the sensor and magnet in alignment, and press firmly. Battery status is monitored and a low battery alert is provided so you can power before performance is affected. Use the mode button to choose normal alarm, continuous alarm, door closing reminder mode, or doorbell mode depending on your needs. What this product solves Provides an immediate audible alert to unauthorized or unexpected openings. Offers flexible alarm behavior to suit different environments and preferences. Delivers a straightforward, tool installation that works across multiple locations without wiring. Packageready for quick deployment where an extra layer of entry monitoring is needed.