Accrued Expenses (Details) - USD ($)	Sep. 30, 2021	Sep. 30, 2020	Oct. 01, 2019	Sep. 30, 2019
Accrued Expenses
Warranty	$ 589,260	$ 547,743		$ 606,680
Salary, benefits and payroll taxes	385,287	483,797
Professional fees	163,130	151,956
Operating lease	$ 14,296	$ 45,126	$ 84,892	$ 0
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Total accrued expenses	Total accrued expenses	Total accrued expenses
Other	$ 279,142	$ 133,338
Total accrued expenses	$ 1,431,115	$ 1,361,960