Serial port module RS232 to TTL module (with transceiver indicator)
1,2 --- VCC (3.3V or 5V)
3,4 --- data transmission (TX)
5,6 --- Data Receive (RX)
7,8 --- GND
Note: P1 Interface
Two 4-pin
Pin
Features the same!
shipping list :1*WWH-Serial port module RS232 to TTL module (with transceiver indicator)