Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)

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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance at beginning of the period $ 175,000 $ 175,000
Payments (110,037) (364,163)
Provision for warranties 110,037 364,163
Balance at end of the period $ 175,000 $ 175,000