High-concerned chemical-free design ensures a safe environment for your home or office. This alarm system is crafted without harmful substances, aligning with stringent safety standards for peace of mind. **120dB Alarm Sound**: Activates a loud alarm when the door or window is opened unexpectedly, perfect for preventing kids from sneaking out and deterring thieves. Compact and discreet, designed to be unobtrusive yet effective. This small form factor allows for easy installation in various locations without compromising the aesthetic of your space. Effortless operation through a wireless communication interface and FR remote-controller. This setup eliminates the need for complex wiring, offering a clean and simple installation process while maintaining reliable communication between components. **LED Lights Flash**: Indicates when the sensor is triggered with a quick flash and immediate alarm, enhancing security visibility. Description: The D2 Door Sensor Alarm is an essential device for enhancing the safety and security of your home. Featuring a loud 120dB alarm, it effectively deters unauthorized entry and alerts you to any unexpected activity. Ideal for ensuring kids' safety and securing your premises, this wireless alarm system is equipped with a remote control for convenient arming, disarming, and emergency functions from up to 300 feet away. Color: White Material: plastic Package Contents: (1 alarm + 2 remote controls) 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.