Solid-State and Electromechanical Relay Products

Relays provide the ability to switch large voltages and currents reliably. Unlike a digital output, the voltage presented on the "output pin" is not fixed at TLL or LVTTL levels, instead your application provides it as an input. This means relays can switch analog voltages, even up to 120 Volts, or more!

Two primary types of relays are available here at ACCES: Electromechanical and Solid-State.

Electromechanical Relays offer zero leakage current but suffer from contact bounce.

Solid-State Relays (often FET drivers) offer zero contact bounce, but suffer from a small leakage current in the "off" state — We're talking a few microamps here!

PCI Express Bus Relay Products

MODEL	DESCRIPTION	RoHS
PCIe-IIRO-16	32-channel (16 isolated digital inputs, 16 electromechanical relay outputs) with change of state detection
PCIe-IIRO-8	16-channel (8 isolated digital inputs, 8 electromechanical relay outputs) with change of state detection

PC/104 Solid-State and Electromechanical Relay Products

MODEL	DESCRIPTION	RoHS
104-IIRO-8	24-channel (8 isolated digital inputs, 8 TTL inputs, 8 relay outputs) with change of state detection
104-IIRO-8E	24-channel (8 isolated digital inputs, 8 TTL inputs, 8 relay outputs) without change of state detection
104-IIRO-16	32-channel (16 isolated digital inputs, 16 relay outputs) with change of state detection
104-IIRO-16E	32-channel (16 isolated digital inputs, 16 relay outputs) without change of state detection
104-II32-4RO	32 isolated digital inputs and 4 relay outputs with change of state detection
104-RO-16	16 relay outputs only version
104-IDIO-16	32-channel (16 isolated digital inputs, 16 solid state outputs) with change of state detection
104-IDIO-16E	32-channel (16 isolated digital inputs, 16 solid state outputs) without change of state detection
104-IDIO-8	16-channel (8 isolated digital inputs, 8 solid state outputs) with change of state detection
104-IDIO-8E	16-channel (8 isolated digital inputs, 8 solid state outputs) without change of state detection
104-IDO-16	16 isolated digital outputs only version
104-IDO-8	8 isolated digital outputs only version

USB and USB/104 Solid-State and Electromechanical Relay Products

MODEL	DESCRIPTION	RoHS
USB-IDIO-16	USB to 16 optically isolated digital inputs (AC or DC) and 16 isolated solid-state relay outputs
USB-IDO-16	USB to 16 isolated solid-state relay outputs only
USB-IDIO-8	USB to 8 optically isolated digital inputs (AC or DC) and 8 isolated solid-state relay outputs
USB-IDIO-16L	USB to 16 optically isolated digital inputs (AC or DC) and 16 isolated low-side solid-state relay outputs
USB-IDO-16L	USB to 16 isolated low-side solid-state relay outputs
USB-IDIO-8L	USB to 8 optically isolated digital inputs (AC or DC) and 8 isolated low-side solid-state relay outputs
USB-IIRO-4	USB to 4 optically isolated digital inputs (AC or DC) and 4 electronmechanical relay outputs
USB-IIRO4-2SM	Small USB-based unit provides 4 optically isolated inputs and 4 electromechanical relay outputs, as well as 2 RS-232/422/485 Serial Ports
USB-IIRO4-DB	USB to 4 optically isolated digital inputs (AC or DC) and 4 electromechanical relay outputs with external DB25 connector
USB-IIRO-8	USB to 8 optically isolated digital inputs (AC or DC) and 8 electromechanical relay outputs
USB-RO-16	USB to 16 electromechanical relay outputs
USB-IIRO-16	USB to 16 optically isolated inputs (AC or DC) and 16 electromechanical relay outputs in a small, rugged steel enclosure
USBP-DAQ-2AI-1EM In Development!	Standalone or USB logging module with 2 16-bit analog inputs (you pick the input ranges!) and 1 electromechanical relay output. Log data for hours or months, with configurable alarm thresholds.