Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 30, 2017	Sep. 30, 2016
Deferred Tax Assets and Liabilities [Abstract]
Deferred Tax Assets, Inventory	$ 1,543,000	$ 1,558,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits	539,000	528,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves	150,000	244,000
Deferred Tax Assets, Property, Plant and Equipment	100,000	98,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	320,000	337,000
Deferred Tax Assets, Deferred Income	237,000	205,000
Deferred Tax Assets, Operating Loss Carryforwards, Domestic	8,794,000	7,223,000
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	1,916,000	1,575,000
Deferred Tax Assets, Tax Credit Carryforwards	989,000	989,000
Deferred Tax Assets, Other	1,181,000	724,000
Deferred Tax Assets, Gross	15,769,000	13,481,000
Deferred Tax Liabilities, Other	64,000	56,000
Deferred Tax Liabilities, Gross	64,000	56,000
Deferred tax assets net of liabilities before valuation allowance	15,705,000	13,425,000
Deferred Tax Assets, Valuation Allowance	(15,705,000)	(13,425,000)
Deferred Tax Assets, Net	$ 0	$ 0