Features: The Wireless Door Open Alarm Sensors offers a impressive operating ranges, ensuring you not miss a visitor or security alarm. Featuring advanced LED indicators and wireless technology, this door Sensors alarm is for easy installation and reliable performances in any home, store, or office environment. For homeowners, business owners, and office managers seek to enhances their security systems with a dependable and user friendly door alarm solution. Perfect for monitoring entry point such as door and window, this alarm Sensors can be used in various setting including homes, retail stores, and corporate offices. With its design and cutting edges technology, the Wireless Door Alarm seamlessly integrates into your existing security setups, providing peace and enhances protections. Specifications: Material: ABS Working Votage: DC12V Battery: 1x23A Battery Requires(NOT Include) Transmitting Frequency: 315MHz/433MHz Transmitting Power: ≤150mW Transmitting Distance: 50-100(In Open Field) Working Temperature: -10 to 50℃ Size: About. 7.5x1.5x4cm/2.95x0.59x1.57in Pattern: A(315MHZ)/B(433MHZ) Package Includes: 1pc Wireless Vibration Door Sensors Alarm note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.