Specification Sheet

HWT905-TTL | Datasheet v20-0707 | http://wiki.wit-motion.com/english
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4 PIN Definition
PIN
Color
Function
VCC
RED
Input Supply
TTL : powered by 3.3-5V
RX
GREEN
Serial data intpute
RX :connected with TX
TX
YELLOW
Serial data output
TX :connected with RX
GND
BLACK
Ground
GND