Manuals and User Guides for National Instruments NI 6521 Module. We have 3 National Instruments NI 6521 Module manuals available for free PDF download: Manual, User Manual
contains five Form A single-pole single-throw (SPST) non-latching relay outputs, three Form C single-pole double-throw (SPDT) non-latching relay outputs, and eight channel-to-channel isolated industrial inputs