1. Material: PCB
2. Working voltage: 3.3 or 5V
3. On-board AMS1117 – 3.3 chip
4. Wireless module operating voltage is 3.3V, while the ordinary 51 single-chip is 5V
5. Connect wireless module with 51 single-chip system board
6. It is for NRF24L01 + wireless module
7. This is a simple socket board which is for NRF24L01 wireless module
