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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Accounting Policies [Abstract]    
Bad debt expense $ 32,721 $ 96,929
Allowance for doubtful accounts $ 110,000 $ 300,000
Potentially dilutive securities, outstanding warrants 17,240,523 26,550,611
Potentially dilutive securities, outstanding options 620,000 320,000
Potentially dilutive securities, convertible Series A preferred stock 510,000 510,000
FDIC insured amount $ 250,000 $ 250,000
Advertising and promotional expenses 144,000 204,000
Research and development expenses 340,582 916,003
Shipping and handling costs $ 186,000 $ 206,000