Adjustable time delay for customized use. Adjustable sensitivity range from 5-20CM. Surface-mounted design for easy installation. LED indication: Blue for standby, Green when a visitor approaches. Widely applicable: Suitable for most infrared door locks and exit switches. Perfect for front doors, back doors, side doors, cabinet doors, and more. Durable construction: Made from high-quality materials for long-lasting use. Secure locking: Infrared touch sensor automatically locks and unlocks for controlled access. Accessory controls: Includes buttons to open or close the door, locking controls from both sides. One-touch control: Manage entry and exit with ease. LED display: Clearly shows the status of your infrared door lock for convenient operation. Color: Black Material: ABS Size: 8.6x8.6CM Package Contents: 1 * Touch-free Exit Button Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.