Tecknowledgey model 7002PC-115 is a Solid State Event Counter designed base upon MIL-DTL-7793/13A military specification (formerly MIL-M-7793/13) that records the number of times that power has been applied for at least 5 seconds 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).