【More Convenience and Security】When the door is opened, the device is triggered and emits a 120dB alarm to alert you and deter intruders, helping to protect your privacy and safety. Compact and portable design allows for easy placement at entry points wherever needed. 【Excellent Design】Features an adjustable sensitivity switch on the side with three levels: Low, Medium, and High. Adjust the sensitivity according to your needs. 【Widely Used】Suitable for use in homes, offices, hotels, retail stores, apartments, and workshops. When the alarm function is turned off, it can also serve as a regular doorstop to hold doors in place. (Note: Works only with inward opening doors.) 【Built to Last】Constructed with ABS plastic and a stainless steel plate for durability, rust resistance, and high strength. Includes buffer rubber on the bottom; however, it is not recommended for use on excessively smooth floors. Note: All measurements are manually taken. Please allow a 1–3 cm variation. Due to differences in lighting and display, some color variation may occur. Actual product received may vary slightly.