Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNT POLICIES (Details) - Schedule of deferred warranty activity

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SUMMARY OF SIGNIFICANT ACCOUNT POLICIES (Details) - Schedule of deferred warranty activity - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Schedule of deferred warranty activity [Abstract]    
Balance, beginning of year $ 378,850 $ 20,631
Additions 1,053,850 397,269
Transfer to revenue (1,267,665) (39,050)
Balance, end of year $ 165,035 $ 378,850