Manual

USB TO RS232/485/TTL User Manual
Version：V1.3，Date：20181108 4 / 13
⚫ LED indicators:
◼ PWR: red power indicator, light up when there is USB connection and voltage
is detected
◼ TXD: green TX indicator, light up when the USB port sends data
◼ RXD: blue RX indicator, light up when the device ports send data back
⚫ Operating environment:
◼ Temperature: -15℃ ~ 70℃
◼ Humidity: 5%RH ~ 95%RH
⚫ Operating system: Windows 10 / 8.1 / 8 / 7 / XP
Note: There is a pad reserved for 120R balancing resistance. Recommend you to weld
120Ω resistors to the first and last devices if you connect many devices at the same
time.