Main control module:SU-03TPower supply interface:Type-C interface or pin headerPower supply voltage:5VPower supply current: 500mAOutput voltage:5V or 3.3V, LDO 5V inside the chip to 3.3V, 3.3V external load does not exceed 150mAPin voltage:3.3VPower consumption:average working current 60mASpeaker specifications:VCC5V 8ohm 3WSupported interfaces:UART/GPIO/ADC/PWM/SPI/12S/12CAll GPIOs can be configured as external interrupt inputs and sources1 standard SPI interface, high speed 30MHz1 full-duplex UART maximum speed 3Mbps, serial port voltage 3.3V1 12C master/slave controller maximum speed 400KHz2 PWM outputs1 12-bit SAR-ADC maximum 450Khz sampling rate32-bit RISC core, running frequency 240MSupport instruction set and FPU floating point unit accelerator: maximum support 1024-point complex /IFFT operation, or 2048-point real /IFFT operationBuilt-in high-speed , built-in 2MB FLASH built-in 2.4W, single-channel Class AB amplifierBuilt-in POR (Power on Reset), low voltage detection and watchdogOperating temperature:-20-70Colour:Random Color(Color is random, accept designation)Material:PCBPackage Contents:1 * Voice Recognition Sensor Module KitOnly 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.