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Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consist of the following: 

 
March 31, 2020
 
December 31, 2019
Purchased components
$
736,791

 
$
720,209

Finished goods
416,769

 
443,505

 
$
1,153,560

 
$
1,163,714