Compact door and window alarm with four professional modes for reliable entry alerts and simple installation Key benefits Improves home and property security with immediate alarms when doors or windows are opened. Helps prevent accidental exits by children or pets and notifies household members of visitors. Easy, tool setup and lowpower design reduce maintenance and get protection working fast. Features Four alarm modes for complete coverage Instant alarm: magnetic sensor triggers an immediate siren when a door or window opens. Continuous alarm: siren continues for more than 10 seconds even if the door or window is closed, ensuring the event is noticed. Open reminder: issues an alert when a door or window remains unclosed, useful for doors or windows accidentally left ajar. Doorbell mode: pleasant notification for visitor arrivals instead of a loud siren. Loud 110 dB siren volume alarm that deters intruders and draws immediate attention in the household. Low battery warning and efficient power design Preinstalled LR44 battery and intelligent monitoring. Emits a single beep of 0.5 seconds when the battery is low and a double alert every 30 minutes during normal operation so battery status is clear. Tool installation Includes doublesided adhesive pads and a preinstalled LR44 battery for quick peelandstick setup. No wires or screws required. Maintain a 0.39inch gap between the alarm unit and magnetic sensor for operation. What makes this product stand out Four distinct alarm modes let you choose the right response for each situation, from gentle visitor alerts to persistent alarms for unauthorized entry. Strong 110 dB output balances effective deterrence with clear household notification. Lowpower design with audible battery reminders limits unexpected downtime. Simple peelandstick installation makes it suitable for renters and property owners who prefer nodrill solutions. Compatibility and form factor Designed for use on doors and windows and compatible with most standard frames and flat surfaces. Compact, lowprofile design mounts discreetly on frames and sills. Comes with a preinstalled LR44 battery so the unit is ready to use out of the box. Typical use scenarios Front door entry and visitor notification: Use doorbell mode to receive a friendly alert when someone arrives and switch to instant alarm for security when needed. Child safety and pet prevention: Mount on gates or doors to prevent children or pets from leaving an area unnoticed and to trigger an immediate alarm if an exit occurs. Home monitoring for unexpected door openings: Place on bedroom or interior doors to alert household members to latenight activity or doors left open. Installation tips Clean the mounting surface before applying the adhesive pad for adhesion. Align the magnetic sensor and alarm so the gap does not exceed 0.39inch for reliable triggering. Test each alarm mode after installation to confirm correct placement and volume. What is included Alarm unit with preinstalled LR44 battery Magnetic sensor Doublesided adhesive pads This door and window alarm provides flexible alert options, clear audible warnings, and fast tool installation to help protect your home and household with minimal setup and maintenance.