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Inventories | 12 Months Ended
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Dec. 31, 2019
Inventory Disclosure [Abstract] |
Inventories | NOTE 4. INVENTORIES Inventories consisted of the following at December 31, 2019 and 2018:
|  | December 31, 2019 |  |  | December 31, 2018 |
Raw material and component parts |  | $ | 4,481,611 |  |  | $ | 4,969,786 |
Work-in-process |  |  | 35,858 |  |  |  | 351,451 |
Finished goods |  |  | 4,906,956 |  |  |  | 4,965,594 |
Subtotal |  |  | 9,424,425 |  |  |  | 10,286,831 |
Reserve for excess and obsolete inventory |  |  | (4,144,013 | ) |  |  | (3,287,771 | )
Total inventories |  | $ | 5,280,412 |  |  | $ | 6,999,060 |
Finished goods inventory includes units held by potential customers and sales agents for test and evaluation purposes. The cost of such units totaled $80,711 and $115,456 as of December 31, 2019 and 2018, respectively.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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