ACCES I/O Products

Founded in 1987 and headquartered in San Diego, California, ACCES I/O Products (Acquisition Control Communication Engineering/Systems) designs and manufactures industrial data acquisition hardware and embedded I/O solutions under ISO 9001:2015 certification. The company maintains a catalog of over 500 COTS models and 1,500-plus customized variants across twelve bus architectures including USB, PCI Express, M.2, PC/104, PCIe/104, Ethernet, and ISA. Their product portfolio spans analog input and output boards with 12-bit and 16-bit ADC/DAC resolution, high-density digital I/O reaching 120 channels on the PCIe-DIO-120, serial communication cards featuring Tru-Iso port-to-port optical isolation in RS-232/422/485 at up to 3 Mbps, relay output modules, signal conditioning subsystems, quadrature counters, watchdog timers, and wireless I/O systems supporting up to 255 remote pods. The ETH-DIO-48 provides Ethernet-based digital I/O for networked control, while the USB-AIO16-16F delivers multifunction analog I/O over USB. Their remote data acquisition platform supports over 200 pods on RS-485 at distances up to 4,000 feet with NEMA 4 enclosures rated for harsh industrial and marine environments. Primary verticals include defense, aerospace, medical, and industrial automation. For water and wastewater applications, ACCES hardware connects flow, pressure, level, and water quality sensors through analog inputs; drives pumps, valves, and alarms through digital I/O and relay boards; communicates with PLCs and SCADA systems via isolated serial cards; and enables distributed remote monitoring through wireless and Ethernet I/O. All products are designed, built, tested, and shipped from their San Diego facility with a three-year warranty.