1、[Industrial Grade FT232 Chip] This USB TTL serial port module adopts industrial grade FT232 chip for high speed communicating, stable and reliable. 2、[Smoothly Interface] Featuring USB B interface and 5.08 mm pluggable terminal block, the plug and unplug is smoothly and easy. 3、[Isolated Circuits] Using large package components for greater stability and reliability, featuring independent power and signal isolation circuits for better performance. 4、[ESD Protective Circuit] Equipped with ESD protective circuit on the USB side, effectively safeguards against static electricity damage, protecting the connected circuits and devices. 5、[Overcurrent and Static Protector] The TTL side has overcurrent and static protective circuits on RXD, TXD, RTS, and CTS pins, ensuring enhanced safety. Item Type: USB TTL Serial Port Module Material: Aluminum Alloy Baud Rate Support Range: 300bps to 3Mbps Two dual color LED indicator lights on board, used to indicate the transmitting and reception status of circuit signals: When USB end receives data, the green light is on. When USB end receives the flowcontrol signal, the red light is on. When TTL end receives data, the green light is on. When TTL end receives the flowcontrol signal, the red light is on. 1 x USB TTL Serial Port Module 1 x Terminal 1 x Screwdriver 1 x Connecting Cable