Feature:
The working voltage of wireless module is generally 3.3v, while that of 51 single chip computer is 5V.
Suitable for 8 pin NRF24L01 + module
Specification:
On AMS1117 chip
Product size: 25.5*21*15mm/1*0.82*0.59''
Note:
Please allow 1-3mm differs due to manual measurement.
Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understand.

Included:
1 X Wireless Adapter Module Socket