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12. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables)
6 Months Ended
Jun. 30, 2019
Accrued Liabilities and Other Liabilities [Abstract]  
Schedule of accrued expenses and other current liabilities

   

June 30, 2019

(Unaudited)

    December 31, 2018  
Commissions   $ 101,558     $ 136,631  
Payroll and related costs     155,213       144,359  
Director fees     41,250       41,250  
Sales Tax Payable     4,335       11,296  
Accrued warranty (Note 13)     30,000       30,000  
Other accrued expenses     66,383       51,663  
Total   $ 398,739     $ 415,199