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Inventory Components (Details) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials and sub-assemblies $ 3,706,834 $ 3,767,588
Finished goods 235,524 241,681
Inventory reserves (647,639) (830,361)
Inventories, net $ 3,294,719 $ 3,178,908