【Optocoupler Isolation】TTL output module with CH340T USB to serial design features optocoupler isolation between PC USB side and serial output side, supporting fast transmission up to 256000bps.
【Selectable Output Level】USB to serial module provides TTL output selectable between 3.3V and 5V, making it suitable for matching different user devices, MCU boards, and serial communication setups.
【Protection Design】TX and RX output side includes protection diode function, helping improve shock resistance during signal transmission. On board 500mA self recovery module supports stable operation.
【Isolated Power Supply】Built in 5V isolated power supply module separates the computer side from the serial device side. No load output may be about 5.4V and drops near 5V after connection.
【Application Use】Made of electronic components, this module isolates TX RX GND and VCC for serial communication projects, development debugging, and connection of sensitive equipment requiring electrical isolation.

Item Type: TTL Output Module
Material: Electronic components
On Board Chip: On board stable CH340T USB to serial chip
On Board Module: On board 500mA self recovery and 5V isolated power supply module protecting the computer from damage
Optocoupler Isolation: Serial port TTL level optocoupler isolation, fast speed (up to 256000bps), high reliability
Protection Diode: Output TX RX side with protection diode function, can improve the shock resistance
Electrical Isolation: PC USB side and serial port output side to achieve complete electrical isolation
Output Level: Output TTL level can be set to 3.3V 5V
Output Current: Maximum output current 150mA for serial output
1 x TTL Output ModuleAs there is a certain error in the 5V to 5V isolated power supply on the isolated serial module, the output power supply voltage will be around 5.4V when VCC is connected to the 5V pin through the jumper cover at no load, but don't worry, the output