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Inventories (Details) - USD ($)
Sep. 30, 2019
Jun. 30, 2019
Inventory Disclosure [Abstract]    
Parts inventory $ 2,091,000 $ 1,783,000
Work in process 301,000 444,000
Finished goods 449,000 521,000
Estimated Inventory to be returned 195,000 184,000
Less: Reserve for obsolescence (290,000) (310,000)
Total $ 2,745,557 $ 2,622,000