The main chip adopts CC2652P, a multi-protocol wireless MCU with integrated amplifierSupports Bluetooth 5.2 Low Energy, Thread, Zigbee 3.0 protocolsPainless access to Home Assistant's ZHA integration or Zigbee2Mqtt plugin. You can also access HassIO in OpenWrtUSB port conversion chip CP2102, in-line identification with electrostatic discharge (ESD) protection indicator: Indicates the status. After connecting the programmer or USB port, the indicator lights upProgramming port & debug port: used to connect XDS110 or other suitable programmers, the line sequence is as followsStatus indicator: The left indicator is a red indicator, which is connected to DIO6 of CC2652P and lights up at high level. The right indicator is green indicator, which is connected to DIO7 of CC2652P and lights up at high level.Reset button: used to reset the CC2652P chip, used to enter BOOTLOAD mode or other situations that need to be resetKEY1: Connect to DIO15, low level after pressing KEY2: Connect to DIO14, low level after pressingUSB port: for USB to serial port, the conversion chip is CP2102. SWITCH chip control: use DIO28, DIO29 control.Style: B with programming lineMaterial:plasticcolour:BlackPackage Contents:1 * CC2652P CC2652 USB Wireless DongleOnly the above package content, other products are not included.Note: Light 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.