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11. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
11. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES

          Accrued expenses and other current liabilities consisted of the following at:

 

   

December 31,

2018

   

December 31,

2017

 
Commissions   $ 136,631     $ 115,506  
Payroll and related costs     144,359       43,484  
Director fees     41,250       27,750  
Accrued warranty     30,000       5,000  
Other accrued expenses     62,959       75,396  
Total   $ 415,199     $ 267,136