Same Module on another listing,(amazon.com.au/dp/B0BKKL321W?ref=myi_title_dp) Sometimes there will be stocks shipped faster by Amazon

Options for controller now: FT232RL or CH343G, This USB TO RS232/485/TTL adopts FT232RL. For CH343G, please refer to USB TO RS232/485/TTL (B)

Features At A Glance:

• Adopt original FT232RL or CH343G inside, fast communicating, stable and reliable, better compatibility
• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
• Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, lightningproof & ESD protection
• Onboard self-recovery fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage proof, improves shock resistance
• Fully automatic transceiver circuit with no delay, ensures the USB port communicates with different interfaces fastly and stably, without interfering each other
• Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch
• Aluminium alloy enclosure with sand blasting and anodic oxidation, CNC process opening, solid and durable
• 3 LEDs for indicating the power and transceiver status
• High quality USB-B and RS232 connectors, smoothly plug/pull
• User Manual: waveshare.com/wiki/USB_TO_RS232/485/TTL?amazon

Safer Isolated Design

• Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
• Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption

The same USB TO RS232/485/TTL on another listing, generally it will be shipped much faster: amazon.com.au/dp/B0BKKL321W?ref=myi_title_dp