WiFi Support IEEE802.11b/g protocol. Working channel frequency range: 2412~2484MHz. Supports 20MHz and 40MHz bandwidth in 2.4GHz band.Support 1T1R mode, data rate up to 150Mbps. Wireless Multimedia (WMM). Frame aggregation (TX/RXA-MPDU, TX/RXA-MSDU). Immediate Block ACK (ImmediateBlockACK) . Fragmentation and defragmentation. Transmission (Transmissionopportunity, TXOP). Beacon automatic monitoring (hardware TSF) 4 x virtual Wi-Fi ports. Supports InfrastructureBSS Station mode, SoftAP mode, Station+SoftAP mode and Promiscuous mode. Please note that when ESP32-C3 series scans in Station mode, the SoftAP channel will change at the same time. Antenna Diversity 802.11mcFTM Bluetooth Bluetooth Low Energy (BluetoothLE): Bluetooth5, Bluetoothmesh .Rate supports 125Kbps, 500Kbps, 1Mbps, 2Mbps. Broadcasting Extensions (AdvertisingExtensions) .Multicast (MultipleAdvertisementSets).Channel (ChannelSelectionAlgorithm 2) Hardware Module interface: GPIO, SPI, UART, I2C, I2S, infrared remote control peripheral, LEDPWM controller, general DMA controller, TWAI controller (compatible with ISO11898-1), USB serial port/JTAG controller, temperature Sensor, SAR A/D Converter 40MHz Integrated Crystal Oscillator Working temperature: -85Celsius. version module: -40~105Celsius Link: https://.baidu./s/12hD9UpChIkp89CkeRqlCiQ Extraction code: mhbu Built-in ESP32-C3FH4 or ESP32-C3FN4 chip, RISC-V32-bit single-core microprocessor, main frequency up to 160MHz 4MB embedded flash 384KB 400KBSRAM (16KB of which is dedicated to cache) 8KBRTCSRAM Colour:black Material:abs+metal Size:44.1 x 26.1mm Package Contents: 1 x ESP32-C3 Bluetooth Module Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.