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Inventories - Schedule of Inventories (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Raw material and component parts	$ 4,312,384	$ 4,481,611
Work-in-process	60,862	35,858
Finished goods	4,881,662	4,906,956
Subtotal	9,254,908	9,424,425
Reserve for excess and obsolete inventory	(4,117,022)	(4,144,013)
Total	$ 5,137,886	$ 5,280,412

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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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