here!
I’m your shopping assistant for PC builds, upgrades, and everything tech.
Got questions? Ask away!
Start a conversation
"usb serial uart"
USB to RS232/485 Serial Converter, Onboard Original FT232RNL Chip, Supports Mac, Linux, Android, Win11/10/8.1/8/7, etc. Multiple Devices Applicable, Multiple Protection, Safe and Stable
Limited time offer, ends 11/14
$58.37
Free Shipping
CableCreation USB to RS232 Adapter with FTDI Chipset, USB to RS232 Male DB9 Serial Converter for Cashier Register, Modem, Scanner, Industrial Machinery, CNC, Black
Limited time offer, ends 12/02
$41.36
Free Shipping
8-CH Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits
Limited time offer, ends 11/14
$91.78
Free Shipping
USB to RS485 Adapter Industrial Isolated Converter with Original FT232RNL Chip, 300bps ~ 512000bps Baud Rate, up to 1.2km RS485 Transmission Distance, Onboard Isolated Transceiver, TVS, etc.
Limited time offer, ends 11/14
$53.87
Free Shipping
RS232/485/422 to RJ45 ETH Module Serial Server Modbus Gateway MQTT Gateway TCP/IP to Serial, with PoE Function, Bi-Directional Transparent Data Transmission Between RS232/485/422 and Ethernet
Limited time offer, ends 11/14
$103.97
Free Shipping
Modbus RTU 4 Channel Relay Module with RS485/TTL UART, 1 Input 1 Output, 7-24V Anti-Reverse Protection for Industrial Home Automation
Limited time offer, ends 11/15
$12.99
Free Shipping
2Pcs 1 Channel Switch Relay Module Modbus Rtu Switching Input Output Relays Board with Anti-Reverse Connection Protection RS485 TTL Communication
Limited time offer, ends 11/15
$12.99
Free Shipping
Modbus-Rtu 7-24V 4 Channel Relay Module Switch Modbus RTU Switch Input Output 5V RS485 TTL Communication Anti-Reverse Connection
Limited time offer, ends 11/15
$12.99
Free Shipping
5V USB Relay with Optocoupler Isolation Industrial Grade Support UART Serial Port Signal Control NO/COM/NC Load 2 Channel Relay
Limited time offer, ends 12/08
$53.39
Free Shipping
Industrial 6-Channel RP2350 Relay Module, Onboard RS485/Pico HAT Interfaces, Compatible with Raspberry Pi Pico Hats, Expanding RTC/CAN / RS232 / LoRa/Sensor, RS485,etc. Multi Protection Circuits
Limited time offer, ends 11/14
$74.11
Free Shipping
4-Channel RS485 Relay Board, Modbus RTU Protocol, 30A High Current 7V~36V, Multi Isolation Protection Circuits, Industrial Grade Rail-Mount Case
Limited time offer, ends 11/14
$83.78
Free Shipping
Waveshare 8-Ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
Limited time offer, ends 11/14
$94.78
Free Shipping
Waveshare Dual Ethernet Ports 8-ch Relay Module (C), Modbus RTU Protocol, PoE Power Supply, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
Limited time offer, ends 11/14
$110.39
Free Shipping
Waveshare 8-Ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
Limited time offer, ends 11/14
$104.78
Free Shipping
8 Channel Network Relay Module Remote Control Relay Device Ethernet to RS485 TCP Relay Module
Limited time offer, ends 11/14
$109.79
Free Shipping
Waveshare 8-Ch Ethernet Relay Module, Modbus RTU/Modbus TCP Protocol, PoE Port Communication, with Various Isolation and Protection Circuits, Industrial Grade Rail-Mount Case
Limited time offer, ends 11/14
$102.78
Free Shipping
Waveshare Industrial Modbus RTU 8-ch Relay Module (E) with RS485, 30A High Current, Multi Isolation Protection, Optocoupler Isolation, Flyback Diode Protection, Rail-Mounted Case.
Limited time offer, ends 11/14
$129.39
Free Shipping
8-CH Relay Module via Ethernet with Digital Input, Adopt Modbus RTU/Modbus TCP Protocol, Supports PoE Power Supply/DC Power Port/Screw Terminal/DC 7~36V Wide Range Power Input
Limited time offer, ends 11/14
$92.18
Free Shipping
Industrial 1-Ch ESP32-S3 WiFi Relay Module, Support RS485 and Bluetooth/WiFi Remote Control, Better for RS485 Modbus Industrial Modules or Sensors, Built-in Protection Circuits, Safe & Stable
Limited time offer, ends 11/14
$51.30
Free Shipping
8 Channel Network Relay Module Remote Control Relay Device Ethernet to RS485 TCP Relay Module
Limited time offer, ends 11/14
$111.78
Free Shipping