Do you need a driver for this?

Hi,Yes, you can get the Driver installation from our wiki link: https://www.waveshare.com/wiki/USB_TO_RS485

Connecting to a conductivity system (analog eval-cn0359-eb1z) power led comes on, yet neither transceiver led. are drivers needed? can i test system?

Hi,please check this way: 1) Disconnect the connection with analog eval-cn0359-eb1z first, send data to the host computer, and check whether TXD is on. 2) Try to test another USB port . 3) Change to another host computer and check whether the TX or RX lights are normal.

I need this to control the “iot relay”, but since the usb ports are always powered, how can i control the on/off effect with this usb adapter?

This is a RS485 serial port adapter, the serial port is always on. If you have a RS485 relay module, the module will alway be on to, that module will control a relay, that it turns on and off by command over the RS485 serial connection.

Will this work with the usb 2.0 on an rpi 3b? currently, when i hook plug it in, the os finds the adapter but then crashes the rs485 bus.

Hi,it can work with the usb 2.0 on an rpi 3b. If it is crushed ,it can be caused by low electricity

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USB to RS485 Converter Industrial Adapter Original FT232RL and SP485EEN Fast Communication Embedded Protection Circuits Resettable Fuse ESD Protection | Embedded Protection Circuits Resettable Fuse ESD Protection TVS Diode etc Automatic Transceiving, Stable and Reliable

Product ID: 180602818

Details

Brand
waveshare
Color
FT232RL
Compatible Devices
PC Industrial
Connector Type
Lightning
Item dimensions L x W x H
1.2 x 0.7 x

⚡Fast comms up to 921600bps

📏Long-range transmission 1.2km

🛡️Embedded surge & ESD protection

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Description

⚡ Power Your Industrial Edge with Speed & Shielded Reliability!

COMPACT POWERHOUSE DESIGN - Sleek 1.2 x 0.7 x 0.11 inch form factor with 5V input and 200mA current rating fits effortlessly into any professional workspace.
BLAZING FAST ULTRA STABLE - Original FT232RL & SP485EEN chips deliver lightning-speed, rock-solid data flow for mission-critical industrial control.
EXTENDED REACH FOR COMPLEX SETUPS - Supports RS485 transmission distances up to 1.2km, perfect for sprawling industrial environments and remote device connectivity.
PLUG PLAY MULTI OS COMPATIBILITY - Seamlessly integrates with Linux, Android, Windows (XP through 11), and WinCE—future-proof your infrastructure with universal support.
BUILT IN INDUSTRIAL GRADE PROTECTION - Onboard TVS, resettable fuse, and diodes shield your setup from voltage spikes and electrostatic shocks—because downtime is not an option.

This industrial-grade USB to RS485 converter features original FT232RL and SP485EEN chips for ultra-fast, stable communication up to 921600bps. Engineered with embedded TVS surge protection, resettable fuses, and ESD safeguards, it ensures robust, long-distance data transmission up to 1.2km. Compatible across multiple operating systems, it’s the go-to adapter for professionals demanding reliable, high-performance serial communication in complex industrial environments.

Specifications

ASIN	B081MB6PN2
Best Sellers Rank	#8 in Serial Adapters #1,597 in Computer Cables & Interconnects
Brand	waveshare
Color	FT232RL Version
Compatible Devices	PC, Industrial Control Equipment
Connector Type	Lightning
Current Rating	200 Milliamps
Customer Reviews	4.6 4.6 out of 5 stars (453)
Finish	Finish
Input Voltage	5 Volts
Item Dimensions	1.2 x 0.7 x 0.11 inches
Manufacturer	Waveshare
Mfr Part Number	Industrial USB to RS485 Converter
Model Number	Industrial USB to RS485 Converter
Number of Items	1
Number of Ports	1
Package Quantity	1
Power Plug Type	No Plug
Smart Home Compatibility	Not Smart Home Compatible
UPC	750904070769 778365986825
Unit Count	1 Count

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26313CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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