641U

USB TO SERIAL ADAPTER

Sealevel USB Devices  •  USB
641U USB to Serial Adapter
641U-OEM
641U - USB to 4 Port RS-232 (RJ45) Serial Adapter (SeaI/O-641U)
CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.
This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.
This product has a lifetime warranty against product failure (excludes user or enviromental damage).
The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.
From
£234

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Version information
Stock
Lead time*
1 off price**
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641U-ROHS
USB to 4 Port RS-232 (RJ45) Serial Adapter
No stock
£234
Peripheral information
Stock
Lead time*
1 off price**
Request qty / trade pricing**
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16 Form C Relay Output SeaI/O Expansion Module (SeaI/O-450N) with standard specification
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96 Channel TTL (50-Pin) Digital Interface SeaI/O Expansion Module
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16 Form C Relay Output SeaI/O Expansion Module (SeaI/O-450N) with board only
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90-265V AC to 5V/12V DC 165W Power Supply - (Requires Power Cord)
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CAT5 Patch Cable, 7' in Length - Blue
No stock
£11
DB25 Male to RJ45 - Preconfigured for RS-232 RJ45 Serial Devices
No stock
£5
DB25 Male to RJ45 Modular Adapter
No stock
£5
DB9 Male to RJ45 Modular Adapter
No stock
£5
DIN Rail Mounting Clips - for SeaI/O, R1100, 4103
No stock
£11
All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the 641U to UK Mainland on orders over £150 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)

641U overview

  • Compliant with RoHS and WEEE directives
  • Utilizes high speed UARTs with 128-byte Tx FIFOs and 384-byte Rx FIFOs
  • Provides 4 x RJ45 serial ports with Tx/Rx status LEDs
  • Integrates transmit and receive LED indicators on each port
  • High-retention USB type B connector prevents accidental disconnection of USB cable
  • Input power via terminal block or barrel connector
  • Includes 72'' USB A to B cable (Item# CA179)
The SeaI/O-641U easily adds four RS-232 serial ports to a Relio R1000, SeaPAC industrial touchscreen computer, stack of SeaI/O modules, or anywhere serial devices need to be connected via an available USB port.

The serial ports appear as standard COM ports to the host system enabling compatibility with legacy software. The SeaI/O-641U supports data rates to 921.6K bps and is designed with a state-machine architecture that greatly reduces the host CPU overhead when communicating over multiple ports simultaneously. Status LEDs display transmit and receive data activity.

The SeaI/O-641U is powered from your 9-30V DC source, or select from a variety of Sealevel power supply options.

For conveniently powering serial peripherals, the supplied power is fused and connected to pin 5 on each of the RJ45 serial connectors. A high-retention USB type B connector helps to prevent accidental disconnection of the USB cable.

An RS-485 pass-through connector on the side of the SeaI/O-641U provides additional I/O expansion using SeaI/O N-series expansion modules. Increase your I/O network with up to 246 additional SeaI/O expansion modules, available with Reed and Form C relays, optically isolated inputs, TTL interfaces, A/D and D/A functionality.
 
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