Schedule II - Summary of Valuation and Qualifying Accounts (Details) - USD ($)		12 Months Ended
		Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2013
Allowance for Doubtful Accounts [Member]
Deductions	[1]	$ (3,255)		$ (4,446)		$ 2,049
Balance at Beginning of Period		10,000		10,000		10,000
Additions Charged to Costs and Expenses	[2]	(3,255)		(4,446)		2,049
Balance at End of Period		10,000		10,000		10,000
Inventory Valuation Reserve [Member]
Deductions	[3]	64,955		315,897		118,107
Balance at Beginning of Period		363,500		793,000		851,000
Additions Charged to Costs and Expenses		(47,045)	[4]	(113,603)	[4]	60,107
Balance at End of Period		251,500		363,500		793,000
Warranty Reserves [Member]
Deductions		12,564		10,335		9,052
Balance at Beginning of Period		9		89		451
Additions Charged to Costs and Expenses		$ 12,555		10,275		8,690
Balance at End of Period				$ 9		89
Valuation Allowance of Deferred Tax Assets [Member]
Deductions						114,400
Balance at Beginning of Period		$ 4,166,700		$ 4,122,300		$ 4,236,700
Additions Charged to Costs and Expenses		82,200		44,400
Balance at End of Period		$ 4,248,900		$ 4,166,700		$ 4,122,300
Deductions

[1] Accounts charged off during year as uncollectible.

[2] Classified as bad debt expense.

[3] Inventory charged off during the year as obsolete.

[4] Reduction in inventory obsolescence reserve.