4-channel user-programmable LEDs 4-channel user-programmable buttons SEGGER J-Link programmable debugger USB interface Supported wireless communication protocols: Bluetooth 5.1, Bluetooth mesh, NFC, 802.15.4, Thread, 2.4GHz proprietary frequency, Zigbee This product is designed for versatile applications, featuring a user-friendly interface and advanced connectivity options. It allows for seamless integration with various devices and supports multiple wireless communication protocols, making it ideal for modern IoT solutions. The programmable features enhance customization, ensuring that users can tailor the device to their specific needs. Color: As Shown Material: PCB Package Contents: 1*Development Board 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.