Income Taxes - Schedule of Tax Effects of Temporary Differences to Deferred Tax Assets and Liabilities (Details) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Deferred tax assets, Inventories	$ 1,029,000	$ 1,543,000
Deferred tax assets, Accrued compensation	348,000	539,000
Deferred tax assets, Warranty accrual	79,000	150,000
Deferred tax assets, Depreciation	61,000	100,000
Deferred tax assets, Allowance for doubtful accounts receivable	149,000	320,000
Deferred tax assets, Unearned revenue	183,000	237,000
Deferred tax assets, U.S. net operating loss carryforwards	7,349,000	8,794,000
Deferred tax assets, Foreign net operating loss carryforwards	2,277,000	1,916,000
Deferred tax assets, Tax credits	989,000	989,000
Deferred tax assets, Other	1,011,000	1,181,000
Deferred tax assets, Gross deferred tax assets	13,475,000	15,769,000
Deferred tax liabilities, Other	38,000	64,000
Deferred tax liabilities, Gross deferred tax liabilities	38,000	64,000
Deferred tax liabilities, Total deferred tax assets and liabilities	13,437,000	15,705,000
Deferred tax liabilities, Less valuation allowance	(13,437,000)	(15,705,000)
Deferred tax liabilities, Net deferred tax assets and liabilities