Warranty (Details) - USD ($)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Warranty cost and accrual information
Warranty accrual, beginning of period	$ 607,001	$ 589,260
Expense accrual for fiscal year	58,472	152,419
Warranty cost incurred for fiscal year	(102,828)	(134,678)
Warranty accrual, end of period	$ 562,645	$ 607,001