Kerui Door Alarm System DI – Premium Security for Your Home & Business
High-sensitivity magnetic sensor ensures instant detection of door/window openings, triggering a loud 100dB alarm to deter intruders. Durable ABS housing with reinforced internal wiring, resistant to wear and extreme temperatures (-10°C to 50°C). Easy DIY installation—no wiring or tools required; adhesive backing fits seamlessly on doors, windows, cabinets, or display cases. Ideal for homes, offices, warehouses, and retail stores; compact design blends discreetly into any decor. Low-power consumption with replaceable CR1632 battery (included), providing months of reliable protection. Sold in bulk at unbeatable wholesale prices—stock up for your security needs today!