105dB high volume door window alarm with super loud siren in the compact body, clear to hear. Alarm triggered by magnet and vibration sounds when window or door door is open. The simple door magnetic alarm offers instant security protection. Once the door is opened, it immediately triggers a loud alarm, effectively deterring potential intruders. With its highly sensitive magnetic sensors, it ensures reliable performance, minimizing false alarms. Whether for home, office, or storage units, this alarm provides round - the - clock security monitoring, giving you peace of mind. Long battery life, eliminating the need to change batteries frequently. Designed for maximum convenience, this door magnetic alarm features effortless installation. It comes with an easy - to - follow setup guide and requires no complex tools or professional assistance. You can quickly attach the magnetic components to the door and frame using the provided adhesive, and it's ready to use in minutes. This hassle - free installation makes it an ideal choice for those who want to enhance security without the headache of complicated installations.