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Accrued Expenses (Tables)
 12 Months Ended
Feb. 29, 2020
Payables and Accruals [Abstract]  
Accrued expenses
   February 29,
2020		   February 28,
2019		 
Accrued compensation  $585,875   $284,587 
Estimated warranty costs   339,275    62,500 
Accrued commissions   332,745    100,114 
Professional fees   74,492    65,049 
Other accrued expenses   281,022    120,456 
   $1,613,409   $632,706