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OTHER CURRENT LIABILITIES (Tables)
 3 Months Ended
Mar. 31, 2021
Other Current Liabilities  
Schedule of other current liabilities

Other current liabilities at March 31, 2021 and December 31, 2020 consist of:

 

    March 31, 2021     December 31, 2020  
Accrued payroll and payroll taxes   $ 1,497,374     $ 1,411,728  
Warranty liability     91,043       90,640  
Other accrued expenses     248,520       287,457  
    $ 1,836,937     $ 1,789,825