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Keep your home safe with the Dewalt Indoor Door Sensor Wireless. This state-of-the-art security device is ideal for monitoring doors and windows, alerting you immediately if they are opened while you are away. The wireless design allows easy installation without any need for wires or tools. Its lithium battery ensures long-lasting use, while the included CR123 ensures hassle-free operation. This product is designed to work with most standard door thicknesses and provides enhanced security to protect your home from unauthorized access. The Indoor Door Sensor Wireless can be easily programmed and operated using a smartphone, providing added convenience to its users. With its advanced features and benefits, the Dewalt Indoor Door Sensor Wireless is perfect for anyone looking to enhance their home security.