1. Powerful 130 dB Alarm Sound: This door and window alarm features a volume alarm that reaches up to 130 dB, loud enough to scare off intruders and alert you immediately to unauthorized access attempts. The intense sound helps deter potential breakins while providing security for your safety needs. 2. Sensitive Detection Technology: Equipped with sensors that detect openings within an 8–15 mm range, these alarms respond quickly to any door or window movement. The responsive mechanism activates instantly upon unauthorized access, helping to effectively protect your property. 3. LONGLASTING BATTERY PERFORMANCE: Powered by LR44 batteries with minimal standby power consumption (≤ 6uAh), these security devices operate reliably for approximately one year without frequent battery replacements. This extended energy efficiency makes them a practical addition to your home security system. 4. Tool, Easy Installation: These compact security alarms can be easily installed on various doors and windows without complicated setup or wiring. Their versatile design works well in homes, apartments, offices, garages, or any space requiring extra protection against unwanted intrusion.