![Amazon.com: DTech Industrial Grade RS232 to RS485 Serial Converter 3 Channel RS-485 Expansion Hub with 600W Surge Protection TX RX LEDs Power Adapter Terminal Block : Electronics Amazon.com: DTech Industrial Grade RS232 to RS485 Serial Converter 3 Channel RS-485 Expansion Hub with 600W Surge Protection TX RX LEDs Power Adapter Terminal Block : Electronics](https://m.media-amazon.com/images/I/71x4lEYUffL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTech Industrial Grade RS232 to RS485 Serial Converter 3 Channel RS-485 Expansion Hub with 600W Surge Protection TX RX LEDs Power Adapter Terminal Block : Electronics
![Amazon.com: Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610) : Electronics Amazon.com: Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610) : Electronics](https://m.media-amazon.com/images/I/61IpOxS+2IL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Serial to WiFi Ethernet Wireless Converter RS232 RS485 Serial Server(USR-W610) : Electronics
![Amazon.com: RS232 to RS485 Serial Communication Data Converter Adapter Nine pins Industrial Grade : Electronics Amazon.com: RS232 to RS485 Serial Communication Data Converter Adapter Nine pins Industrial Grade : Electronics](https://m.media-amazon.com/images/I/41ndGHUwVJL._AC_UF894,1000_QL80_.jpg)
Amazon.com: RS232 to RS485 Serial Communication Data Converter Adapter Nine pins Industrial Grade : Electronics
![Amazon.com: DTECH RS232 to RS485 Converter Serial Adapter with 4 Position Terminal Block for Long Haul Data Communication Supports 600W Anti-Surge : Electronics Amazon.com: DTECH RS232 to RS485 Converter Serial Adapter with 4 Position Terminal Block for Long Haul Data Communication Supports 600W Anti-Surge : Electronics](https://m.media-amazon.com/images/I/51r2HiLXpVL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTECH RS232 to RS485 Converter Serial Adapter with 4 Position Terminal Block for Long Haul Data Communication Supports 600W Anti-Surge : Electronics
![Amazon.com: Centopto Serial RS232 RS485 RS422 to Fiber Converter Bidirectional High Speed Optic Modem SFP Slot Serial Over Fiber Converter SFP Serial to Fiber Converter : Electronics Amazon.com: Centopto Serial RS232 RS485 RS422 to Fiber Converter Bidirectional High Speed Optic Modem SFP Slot Serial Over Fiber Converter SFP Serial to Fiber Converter : Electronics](https://m.media-amazon.com/images/I/61BnE--AJhL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Centopto Serial RS232 RS485 RS422 to Fiber Converter Bidirectional High Speed Optic Modem SFP Slot Serial Over Fiber Converter SFP Serial to Fiber Converter : Electronics
![Amazon.com: LFHUKEJI RS232 to RS485, RS-232 Female to RS-485/RS-422 485/422 Female Adapter Converter(Passive) : Electronics Amazon.com: LFHUKEJI RS232 to RS485, RS-232 Female to RS-485/RS-422 485/422 Female Adapter Converter(Passive) : Electronics](https://m.media-amazon.com/images/I/51d+zewzrIL._AC_UF894,1000_QL80_.jpg)
Amazon.com: LFHUKEJI RS232 to RS485, RS-232 Female to RS-485/RS-422 485/422 Female Adapter Converter(Passive) : Electronics
![Amazon.com: COMMFRONT Industrial RS232 / RS485 / RS422 to Fiber Optic Converter, Multi-Mode, ST Connectors, 3 Miles / 5KM, DIN-Rail/Wall/Panel Mount : Electronics Amazon.com: COMMFRONT Industrial RS232 / RS485 / RS422 to Fiber Optic Converter, Multi-Mode, ST Connectors, 3 Miles / 5KM, DIN-Rail/Wall/Panel Mount : Electronics](https://m.media-amazon.com/images/I/71saj3tBQmL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: COMMFRONT Industrial RS232 / RS485 / RS422 to Fiber Optic Converter, Multi-Mode, ST Connectors, 3 Miles / 5KM, DIN-Rail/Wall/Panel Mount : Electronics
![Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics](https://m.media-amazon.com/images/I/51kC8JThzKL.jpg)
Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics
![Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics](https://m.media-amazon.com/images/I/41HivPwXoSL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA21%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics
![Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics](https://m.media-amazon.com/images/I/51yDzwoqdmL._AC_UF894,1000_QL80_.jpg)
Amazon.com: RS485 Converter Adapter, RS-232 to 485/422 Converter Adapter Cascadable 16-32 Devices Converter for Attendance Machines, Compatible with RS-232, RS-485, RS-422 Standards : Electronics
![Amazon.com: BUELEC Industrial High Speed USB to RS232/RS485/RS422/TTL 4 in 1 Converter,Magnetic Isolated,Built-in 3000V Dual Isolation Power Module,Two-Way Independent Data Transmission,FT4232 Chipset : Electronics Amazon.com: BUELEC Industrial High Speed USB to RS232/RS485/RS422/TTL 4 in 1 Converter,Magnetic Isolated,Built-in 3000V Dual Isolation Power Module,Two-Way Independent Data Transmission,FT4232 Chipset : Electronics](https://m.media-amazon.com/images/I/81heSXamFoL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: BUELEC Industrial High Speed USB to RS232/RS485/RS422/TTL 4 in 1 Converter,Magnetic Isolated,Built-in 3000V Dual Isolation Power Module,Two-Way Independent Data Transmission,FT4232 Chipset : Electronics
![Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics](https://m.media-amazon.com/images/I/51kC8JThzKL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTECH RS232 to RS485 / RS422 Serial Communication Data Converter Adapter Mini-Size : Electronics
![Amazon.com: UHPPOTE RS232 to RS485 Interface Communication Data Signal Passive Converter Adapter : Electronics Amazon.com: UHPPOTE RS232 to RS485 Interface Communication Data Signal Passive Converter Adapter : Electronics](https://m.media-amazon.com/images/I/71d4fAJqhtL._AC_UF894,1000_QL80_.jpg)
Amazon.com: UHPPOTE RS232 to RS485 Interface Communication Data Signal Passive Converter Adapter : Electronics
![Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics](https://m.media-amazon.com/images/I/5160fZaKSbL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics
![Amazon.com: JUXINICE RS232 to RS485 Adapter,RS232 Serial DB9 to RS485 bidirectional Conversion Adapter Integrated Shell-Black with Bolts Tail Pipes : Electronics Amazon.com: JUXINICE RS232 to RS485 Adapter,RS232 Serial DB9 to RS485 bidirectional Conversion Adapter Integrated Shell-Black with Bolts Tail Pipes : Electronics](https://m.media-amazon.com/images/I/61jzr1ZHBqL._AC_UF894,1000_QL80_.jpg)
Amazon.com: JUXINICE RS232 to RS485 Adapter,RS232 Serial DB9 to RS485 bidirectional Conversion Adapter Integrated Shell-Black with Bolts Tail Pipes : Electronics
![Amazon.com: DTECH Industrial Grade RS232 to RS485 Converter Adapter Optical Isolation Protector with TX RX LED Lights for Long Haul Serial Communication : Electronics Amazon.com: DTECH Industrial Grade RS232 to RS485 Converter Adapter Optical Isolation Protector with TX RX LED Lights for Long Haul Serial Communication : Electronics](https://m.media-amazon.com/images/I/51Sl9iBg+jL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTECH Industrial Grade RS232 to RS485 Converter Adapter Optical Isolation Protector with TX RX LED Lights for Long Haul Serial Communication : Electronics
![Amazon.com: JUXINICE 2Packs DB9 Serial Adapters No Soldering Needed. D-SUB 9-pin RS232 RS485 Adapter to Terminal Connector Signal Module with Bolts Nuts and Screwdriver (1PCS Male+1PCS Female) : Electronics Amazon.com: JUXINICE 2Packs DB9 Serial Adapters No Soldering Needed. D-SUB 9-pin RS232 RS485 Adapter to Terminal Connector Signal Module with Bolts Nuts and Screwdriver (1PCS Male+1PCS Female) : Electronics](https://m.media-amazon.com/images/I/81DyZL87HqS._AC_UF894,1000_QL80_.jpg)
Amazon.com: JUXINICE 2Packs DB9 Serial Adapters No Soldering Needed. D-SUB 9-pin RS232 RS485 Adapter to Terminal Connector Signal Module with Bolts Nuts and Screwdriver (1PCS Male+1PCS Female) : Electronics
![Amazon.com: DTech Active Isolated RS232 to RS485 RS422 Converter with RJ45 Serial Port Terminal Board Power Adapter DB9 Cable Optical Isolation Protection 2.5kV : Electronics Amazon.com: DTech Active Isolated RS232 to RS485 RS422 Converter with RJ45 Serial Port Terminal Board Power Adapter DB9 Cable Optical Isolation Protection 2.5kV : Electronics](https://m.media-amazon.com/images/I/61OmbI2NxnL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTech Active Isolated RS232 to RS485 RS422 Converter with RJ45 Serial Port Terminal Board Power Adapter DB9 Cable Optical Isolation Protection 2.5kV : Electronics
![Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics](https://m.media-amazon.com/images/I/61W+N8H6uGL.jpg)
Amazon.com: DTech RS232 to RS485 Serial Converter Adapter with 4 Position Terminal Block for Industrial Long Haul Communication Data Supports 600W Anti-Surge : Electronics
![Amazon.com: Industrial Electromagnetic Isolated RS232 TO RS485 Converter with Screw Terminal and RJ45 Connector for RS485,DB9 female Connector for RS232,ADI Magnetical Isolation,1200m Transmission Distance : Electronics Amazon.com: Industrial Electromagnetic Isolated RS232 TO RS485 Converter with Screw Terminal and RJ45 Connector for RS485,DB9 female Connector for RS232,ADI Magnetical Isolation,1200m Transmission Distance : Electronics](https://m.media-amazon.com/images/I/51rsjjFkzmL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Industrial Electromagnetic Isolated RS232 TO RS485 Converter with Screw Terminal and RJ45 Connector for RS485,DB9 female Connector for RS232,ADI Magnetical Isolation,1200m Transmission Distance : Electronics
![Amazon.com: Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments : Electronics Amazon.com: Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments : Electronics](https://m.media-amazon.com/images/I/61gPi2PJddL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Waveshare USB to RS232 / RS485 / TTL Industrial Isolated Converter with Original FT232RL Embedded Protection Circuits and Aluminium Alloy Enclosure for Industrial Control Equipments : Electronics
![Amazon.com: DTech Bi-Directional Active RS232 to RS485 RS422 Serial Converter with Surge Protection 600W 15KV ESD DB9 to RJ45 Phoenix Contacts Adapter Power Supply TX RX LEDs for Long Haul Data Communication : Amazon.com: DTech Bi-Directional Active RS232 to RS485 RS422 Serial Converter with Surge Protection 600W 15KV ESD DB9 to RJ45 Phoenix Contacts Adapter Power Supply TX RX LEDs for Long Haul Data Communication :](https://m.media-amazon.com/images/I/61ZEcA505eL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DTech Bi-Directional Active RS232 to RS485 RS422 Serial Converter with Surge Protection 600W 15KV ESD DB9 to RJ45 Phoenix Contacts Adapter Power Supply TX RX LEDs for Long Haul Data Communication :
![Amazon.com: DTech USB to RS422 RS485 Serial Port Adapter Cable with FTDI Chipset 5 Position Terminal Board for Windows 11 10 8 7 XP Mac (4 Feet) : Electronics Amazon.com: DTech USB to RS422 RS485 Serial Port Adapter Cable with FTDI Chipset 5 Position Terminal Board for Windows 11 10 8 7 XP Mac (4 Feet) : Electronics](https://m.media-amazon.com/images/I/61c+gGvQvnL._AC_UF894,1000_QL80_.jpg)