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

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

⚡921600bps ultra-fast comm

📏1.2km stable transmission range

🛡️Embedded surge & ESD protection

¥5304

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Description

⚡ Power Your Industrial Network with Speed & Safety!

ROCK SOLID PROTECTION - Built-in TVS, resettable fuse, and ESD safeguards ensure your device stays safe from voltage spikes and electrostatic shocks.
PLUG PLAY VERSATILITY - Effortlessly compatible across Linux, Android, Windows (XP to 11), and WinCE—no driver hassle required.
BLAZING FAST DATA TRANSFER - Experience lightning-speed communication up to 921600bps, perfect for demanding industrial control systems.
EXTENDED REACH CONNECTIVITY - Seamlessly transmit data over distances up to 1.2 kilometers without compromising signal integrity.
COMPACT INDUSTRIAL GRADE DESIGN - Sleek, durable form factor engineered for rugged environments and continuous operation.

This industrial-grade USB to RS485 converter leverages original FT232RL and SP485EEN chips to deliver ultra-fast, stable communication up to 921600bps across distances up to 1.2km. Featuring embedded surge protection, resettable fuses, and ESD defense, it ensures reliable, shock-resistant performance in demanding environments. Compatible with multiple OS platforms and designed for plug-and-play ease, it’s the go-to adapter for professional-grade industrial control and communication setups.

Specifications

ASIN	B081MB6PN2
Best Sellers Rank	#12 in Serial Adapters #1,989 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 (466)
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
UPC	750904070769 778365986825
Unit Count	1 Count

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¥5304

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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