Equipped with RISC-V 32-bit single-core processor, the operating frequency is up to 160 MHz with 320 KB ROM,512 KB SRAM,16 KB Low-power (LP) SRAMSupport IEEE 802.11ax protocol, IEEE 802.11 b/g-compliantSupport Bluetooth BLE 5Integrated lithium battery charging chipRich peripheral interfaces, including 23 GPIOs, UART, I2C, I2S, (TX/RX),LED PWM, etc.The ESP32- Development board is a versatile Wi-Fi, IEEE 802.15.4, and Bluetooth LE module with powerful features. It uses the ESP32- chip, equipped with RISC-V 32-bit single-core processor, has 4 MB external SPI flash memory, and integrates rich peripherals, including SPI, UART, I2C, on-board antenna, and up to 23 GPIO and other interfaces. Integrated lithium battery charging chip. Rich peripherals and high performance make this module Perfect for smart homes, industrial automation, healthcare, consumer electronics, and more.Model:ESP32--WROOM-1-N4 ModuleChip:ESP32- chip, RISC-V 32-bit single-core processor, supports clock frequency up to 160 MHzWorks in 2.4 GHz frequency band, 1T1RSupports Bluetooth Low Energy 5.04 x virtual Wi-Fi interfacesSupport IEEE 802.11ax protocolCompatible with IEEE 802.11b/g protocols, supporting 20 MHz and 40 MHz bandwidth-data rates up to 150 MbpsCompatible with IEEE 802.15.4-2015 protocol, working in 2.4 GHz frequency band, supporting OQPSK PHY/Thread 1.3/Zigbee 3.0Antenna form:onboard PCB antennaSupport interface:UART, I2C, I2S, (TX/RX), LED PWM, USB Serial/JTAG controller, etc.Operating temperature:-40-85Power supply range:0-3.6VIntegrated lithium battery charging chipSPI Flash:4MBColour:BlackMaterial:PCB+MetalSize:37x24mmPackage Contents:1 * Development Board2 * pinOnly 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.