Inventories (Details) - USD ($)	Dec. 31, 2019	Jun. 30, 2019
Inventory Disclosure [Abstract]
Parts inventory	$ 2,132,000	$ 1,783,000
Work in process	178,000	444,000
Finished goods	447,000	521,000
Estimated Inventory to be returned	204,000	184,000
Less: Reserve for obsolescence	(310,000)	(310,000)
Total	$ 2,651,420	$ 2,622,000

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount of valuation reserve for inventory.

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Gross amount of merchandise or supplies to which the entity holds the title but does not hold physical possession because the goods are currently being transported.

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Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer.

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