The National Instruments PXI-2520 is a versatile PXI Relay Module designed for general-purpose switching applications. Featuring 80 single-pole single-throw (SPST) independent relays, this module offers low engagement resistance and thermal mismatch, ensuring reliable performance in automated test equipment (ATE) environments and for controlling devices such as heaters, lights, and fans. The PXI-2520 supports internal relay account tracking, enabling complete programmability through software interfaces. It is capable of switching inductive loads, but users should be aware that high voltage transients exceeding the module's rated voltage can occur, which may affect relay lifespan without proper protective measures. The module has a low DC path resistance that typically remains stable throughout the relay's life, experiencing a rapid increase as it nears end-of-life thresholds. Included within the design is a cycle power process that requires total power removal for adequate component discharge, as mere reboots are insufficient to fulfill this requirement. Additionally, the module’s memory is volatile, meaning that power loss results in content loss. With a switching bandwidth of 35 MHz and a scan rate of 145 cycles per second, the PXI-2520 is both efficient and effective for a wide range of applications. Dimensions are 8.5 x 0.8 x 5.1 inches, and it weighs 6.1 ounces, with a warranty spanning two to three years. For documentation, the user manual and maintenance manual are available for download. For pricing information, please contact a sales representative directly.