National Instruments (NI) has been in the test equipment business for more than 40 years, transforming the field with high-tech, innovative test and measurement solutions. National Instruments works with scientists, researchers, and engineers to come up with solutions to the most complex and challenging industry questions. NI has created thousands of products to overcome these problems, optimizing the electronic testing industry as a whole with groundbreaking products and solutions. NI is the manufacturer of controllers, adapters, switches, data acquisition (DAQ) cards, connector blocks, system mainframes, multifunction modules, computers, interfaces, and test equipment accessories. Shop used and refurbished NI items at ValueTronics.com.