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5pcs CH340 USB to TTL Module Upgrade Refresh Cable STC Downloder
Description:
- on board CH340 USB-RS232 port converter chip
- on board power indicator
- On board USB Male port,can connect computer
- TTL pin all lead out
- Working voltage:5V
- PCB size:18.2(mm)x15(mm)
Package list:
- 5 x CH340 USB to TTL Module Upgrade Refresh Cable STC Downloder