Keithley SRA-01 IO Relay Board Module Assembly

Keithley SRA-01 IO Relay Board Module Assembly is an 8-channel solid-state I/O interface that links compatible Keithley digital I/O boards with industry-standard solid-state AC/DC input/output modules. In industrial automation, automated test equipment, process control, and data acquisition, it provides signal sensing and load switching for AC and DC, with nine sockets: K1–K4 configurable as input or output, K5–K8 output-only, and K9 an interrupt input for compatible PIO-12/PIO-24 boards. Status is indicated by 8 red LEDs for outputs and 5 yellow LEDs for inputs, and the unit runs on +5 VDC (approximately 39 mA board-only; ~100 mA with modules installed). Operating temperature ranges from 0 to 60°C, with storage from -40 to 100°C and 0–90% non-condensing humidity, while screw terminals accept 12–22 AWG wire; compatible Keithley boards include KPCI-3160, KPCI-PIO96, PIO-96J, PIO-12, PIO-24, KPCI-PIO24, KPCMCIA-PIO24, KPCI-3107, KPCI-3108, DAS-1600/1200 Series, and DASCON-1, making maintenance technicians, system integrators, and automation engineers rely on it for machine control, system expansion, and replacement of legacy I/O interface hardware.