STC15L204+Wireless Pass Through Module NRF24L01

1.Onboard STC15L204EA single-chip microcomputer, the single chip microcomputer as 3.3V power supply

2.Onboard NRF24L01 + wireless module

3.Onboard UART interface, used to implement the serial communication

4.Onboard 5V to 3.3V AMS1117-3.3 chip

5.All the I/O derivation, and mark the I/O name

6.PCB size: 39*26 mm