USB Isolated I/O and Serial Communication Board
USB Isolated I/O and Serial Communication Board
USB-IIRO4-2SM
The USB-IIRO4-2SM is a USB multifunction device, incorporating a USB 4-port hub internally to provide four optically isolated digital inputs, four electromechanical relay outputs and two ports of RS-232/422/485 serial communication in one small product. The digital portion is ideal for adding easy-to-install isolated input and relay output capabilities to any PC or embedded system with a USB port. This single USB multifunction device is ideal for a variety of applications such as industrial monitoring, control and communication.
- Brand: Acces IO
- Four optically isolated digital inputs
- Four Form C electromechanical 1A relays
- Two serial ports, field selectable RS-232/422/485
- Small (4″x4″X1.8″) rugged industrial enclosure

Details
The USB-IIRO4-2SM is a USB multifunction device, incorporating a USB 4-port hub internally to provide four optically isolated digital inputs, four electromechanical relay outputs and two ports of RS-232/422/485 serial communication in one small product. The digital portion is ideal for adding easy-to-install isolated input and relay output capabilities to any PC or embedded system with a USB port. This single USB multifunction device is ideal for a variety of applications such as industrial monitoring, control and communication.
Ordering Info
- USB-IIRO4-2SM Enclosure and multifunction module
- USB-IIRO-4DB 4 isolated digital inputs and 4 relay outputs only
- USB-COM-2SM 2 Port USB to RS-232/422/485 serial adapter
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Specification
- Multifunction I/O adapter for USB 1.1 and 2.0 port hosts
- Four optically isolated digital inputs
- Four Form C electromechanical 1A relays
- Two serial ports, field selectable RS-232/422/485
- Small (4″x4″X1.8″) rugged industrial enclosure
- PC/104 module size and mounting compatibility
- All required power drawn from USB port, no external power adapter required
- Expansion USB hub port connector
- Type B USB connector features industrial strength and high-retention design
Warranty & Service Information for ACCES I/O Products (EMEA)
All ACCES I/O products distributed in the EMEA come with a 2 year warranty as standard, with additional extension options available upon request. As an official ACCES I/O partner, we are proud to provide customers with peace of mind and the highest quality products, including any systems which have been configured to meet individual specifications.
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