<p>Technical parameters:</p> <p>Bluetooth version: 5.3</p> <p>Main chip: Nordic nRF52840</p> <p>Supporting APP: PC-side Connect</p> <p>Power supply voltage (mode): USB power supply (5V)</p> <p>Button: Yes</p> <p>Wireless transmission distance: 0~60m</p> <p>Working temperature: -20~ 60\u00B0C</p> <p>Whether to support OTA-DFU air upgrade: Yes</p> <p>USB burning program: Can burn the program repeatedly (button reset)</p> <p>Support system: forMAC\/Linux\/</p> <p>Application scenario: Internet of Things\/Building Receiver\/Wearable Medical</p> <p>LED: Yes</p> <p>Wireless transmission power: -20dBm~+8dBm</p> <p>Wireless receiving baud rate: 9600\/115200</p> <p>Storage: 1MB Flash, 256kb RAM</p> <p>Transmission rate (maximum): 2Mpbs</p> <p>Can firmware be burned: Yes</p> <p>Communication method, protocol: Bluetooth \/Thread; Matter \/Zigbee; Bluetooth Mesh\/ANT</p> <p>Color: Black</p> <p>Material: ABS</p> <p>Package Contents:</p> <p>1 x Bluetooth Adapter</p> <p>Only the above package content, other products are not included.</p> <p>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.</p>