6. Accrued Expenses (Tables)

12 Months Ended

Mar. 31, 2019

6. Accrued Expenses (Tables) [Line Items]

Schedule of Product Warranty Liability [Table Text Block]

The following table provides a summary of the changes in warranty reserves for the years ended March 31, 2019 and 2018:

	March 31,
	2019			2018
Warranty reserve, at beginning of period	$	111,983		$	188,444
Warranty expense		58,082			4,823
Warranty deductions		(52,051	)		(81,284	)
Warranty reserve, at end of period	$	118,014		$	111,983

Accrued Employee Related Liabilities [Member]

6. Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued vacation pay, deferred wages, payroll and payroll withholdings consist of the following:

	March 31,
	2019		2018
Accrued vacation pay	$	325,647	$	346,871
Accrued compensation and payroll withholdings		68,649		100,992
	$	394,296	$	447,863

Other Liabilities [Member]

6. Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses - other consist of the following:

	March 31,
	2019		2018
Accrued commissions		46,853		33,370
Accrued legal costs		30,000		35,996
Accrued consulting fees		164,059		7,750
Warranty reserve		118,014		111,983
Accrued – other		73,546		52,320
	$	432,472	$	241,419

Accrued Liabilities, Related Party [Member]

6. Accrued Expenses (Tables) [Line Items]

Schedule of Accrued Liabilities [Table Text Block]

Accrued expenses – related parties consists of the following:

	March 31,
	2019		2018
Interest and other expenses due to the Company’s President/CEO		3,017		31,151
	$	3,017	$	31,151