2X NRF52840 Dongle USB Dongle Bluetooth 5.3 Dongle Adapter for Eval Bluetooth Development Tool Module Automation Modules

2X NRF52840 Dongle USB Dongle Bluetooth 5.3 Dongle Adapter for Eval Bluetooth Development Tool Module Automation Modules Technical parameters: Bluetooth version: 5.3 Main chip: Nordic nRF52840 Supporting APP: PC-side nRF Connect Power supply voltage (mode): USB power supply (5V) Button: Yes Wireless transmission distance: 0~60m Working temperature: -20~ 60°C Whether to support OTA-DFU air upgrade: Yes USB burning program: Can burn the program repeatedly (button reset) Support system: forMAC/Linux/Windows Application scenario: Internet of Things/Building Receiver/Wearable Medical LED: Yes Wireless transmission power: -20dBm~+8dBm Wireless receiving baud rate: 9600/115200 Storage: 1MB Flash, 256kb RAM Transmission rate (maximum): 2Mpbs Can firmware be burned: Yes Communication method, protocol: Bluetooth /Thread; Matter /Zigbee; Bluetooth Mesh/ANT Color: Black Material: ABS Package Contents: 2 x Bluetooth Adapter 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.