This module is made of 's industrial-grade chip FT232BL, the chip operating temperature range: -40~+85The six pin definitions are: GND VCC TX RX DTRUsing FT232BL chip; Export all signal ports of FT232BL chip, TTL/CMOS levelRXD/TXD transceiver communication indicatorUSB powered, optional 5V or 3.3V interface level (if other levels are required, the target voltage can be provided directly on the VCC and GND pins)Product HighlightsFT232BL USB to serial port module USB to TTL levelThe king of flashing USB-RS232-TTL lines USB2TTL protection version Overcurrent protection version Adopt USB2.0 good FT232RL chip, USB supply adopts 500MA fuse (FUSE) to protect your USB supply and equipment More stable performance This product uses a new design, using the good FT232RL chip of USB2.0, which converts the USB into a serial port. Available in two supply versions.Each module passes the test with 10W bytes of self-sent and self-received before leaving the factory Type: FT232BL Modulecolor:RedMaterial:PCB + electronic componentsPackage Contents:1 x FT232BL ModuleOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.