Smart Door Magnetic Alarm Sensor
High-sensitivity magnetic sensor instantly triggers loud alarm (110dB) upon unauthorized door opening. Durable ABS housing with weatherproof design ensures reliable indoor/outdoor use. Easy peel-and-stick installation (no wiring) with 3M adhesive backing. Compact 2.4cm slim profile blends discreetly with door frames. Ideal for apartments, dorm rooms, offices, and retail stores. Includes replaceable CR1632 battery (12-month lifespan). Compatible with wooden/metal/glass doors. Dual alarm modes (continuous/beeping) via slide switch. FCC/CE certified. Bulk pricing available for property managers/hotels. Ships globally with wholesale discounts on 100+ units.