Compact door and window sensor that delivers reliable open and closed status detection for homes, offices, shops, and pool gates. The unit functions as a chime or alarm, using a sensitivity sensor to register even small movements and provide timely alerts. Key benefits Accurate status detection: Detects whether doors or windows are open or closed and triggers an immediate chime or alarm for fast awareness. sensitivity: The sensor picks up slight movement so you are alerted to unauthorized or unexpected openings. Versatile use: Works as a door chime for businesses to notify staff of customer entry, as a pool gate alarm to warn of gate openings, or as a bedroom or office security sensor. Easy surface mount installation: Designed for quick installation on most door and window frames, allowing fast setup with minimal disruption. Compact, unobtrusive design: Low profile housing fits discreetly on doors and windows while providing consistent performance. Primary functions and performance Function: Open and closed status detection with selectable chime or alarm output. Performance: sensitivity detection minimizes missed events while remaining practical for everyday use. Compatibility: Suitable for most standard doors, windows, gates, and sliding doors where surface mounting is possible. Installation: Surface mount format for straightforward attachment to frame surfaces and aligned sensor placement. Practical use scenarios Retail or office entry chime: Install above a staff area to alert employees when customers enter, improving response times and customer service. Pool gate or external door alarm: Mount on pool gate or exterior doors to receive audible alerts when the gate is opened, enhancing perimeter monitoring. Bedroom or interior security: Place on bedroom or office doors to detect unauthorized entry or to monitor access within a building. What to expect Reliable detection of door and window status with prompt audible notification. Flexible placement across residential and commercial locations. Simple surface mount installation and compact design for minimal visual impact. This sensor is intended to provide timely alerts and improved awareness of openings and closings across a variety of locations.