Industrial USB to 4-ch serial Converter, USB to 1-ch TTL+1-ch TTL/RS485+1-ch isolated RS485/422+1-ch isolated RS232/485 Specifications 1. USB Operating voltage: 5V Connector: USB-B Protection: 200mA self-recovery fuse, isolated output 2. TTL (UART) Operating voltage: 3.3V / 5V Connector: Screw terminal Protection: Clamp protection diode, over-voltage/negative-voltage proof, shockproof Transmission mode: Point-to-point Baud rate: 300 bps ~ 12Mbps 3. RS485/TTL (UART) Operating voltage: RS485: 5V TTL: 3.3V / 5V Connector: Screw terminal Protection: Clamp protection diode, over-voltage/negative-voltage proof, shockproof Transmission mode: Point-to-point Baud rate: 300 bps ~ 12Mbps 4. RS485/422 Connector: Screw terminal Direction control: Hardware automatic control Protection: TVS diode, surge protection & ESD protection (reserve 2x 120R resistors that can be enabled by jumper caps.) Transmission mode: Point-to-multipoints (485 mode: up to 32 nodes, it is recommended to use repeaters for 16 nodes or more; 422 mode: up to 256 nodes, it is recommended to use repeaters for 16 nodes or more.) Baud rate: 300bps ~ 12Mbps 5. RS485/RS232 Connector: Screw terminal Protection: TVS diode, surge protection & ESD protection (120R resistor on the RS485 that can enabled by jumper caps.) Transmission: Point-to-point Baud rate: RS485: 300bps ~ 12Mbps RS232: 300bps ~ 500000bps INDICATOR PWR: Red power indicator, light up when there is a 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. ENVIRONMENT REQUIREMENTS Temperature range:-15 ~ 70? Humidity range: 5% ~ 95%RH Online Tutorial: n9.cl/4g4x8

Onboard TTL serial 3.3V/5V voltage translator, config the TTL level via switch. 9 LEDs for indicating the power and transceiver status. Supports Mac, Linux, Android, Windows 11 / 10 / 8.1 / 8 / 7, etc. Fully automatic transceiver circuit with no delay, ensures fast and stable communication between the USB port and different interfaces, without interfering with each other. 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 proof performance. 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. Industrial USB to 4-ch Serial Converter, supports USB to RS232/485/422/TTL, supports USB to 1-ch TTL + 1-ch TTL/RS485 + 1-ch isolated RS485/422 + 1-ch isolated RS232/485. Adopts original FT4232HL chip, fast communicating, stable and reliable, better compatibility.