Advanced Security Technology: Equipped with the latest PIR motion detection technology, the M120 sensor effectively identifies any unauthorized movement, ensuring your safety and peace of mind. Versatile Application: Perfect for use in homes, garages, and shops, this device serves as both a burglar alarm and a welcome chime, adapting to your varied security needs. User-Friendly Design: Easy to install and operate, this wireless alarm system can be set up in minutes without the need for complex wiring or professional help. High Performance: The infrared technology not only detects motion but also minimizes false alarms, enhancing the system's accuracy and reliability. Color: White & Blue Material: plastic Package Contents: 1 * Door sensor 1 * Remote Control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.