Tecknowledgey model 7003NT-028 is a Solid State Pulse Counter designed to meet MIL-DTL-7793 military specification (formerly MIL-M-7793) that records the number of number of pulses applied to the input up to 9,999,999 counts. Requires a military part number M7793/12-1 hand held reader to be read. See Tecknowledgey's model 1170-007 hand held reader (sold separately).