Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Net income	$ 1,262,812	$ 1,462,020
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	146,307	93,931
Provision for doubtful accounts	(600)	4,372
Warranty provision	19,254	(33,566)
Inventory obsolescence	(143,686)	154,109
Share-based compensation	736,378	684,451
Loss on sale or impairment of patents	86,445	41,621
Changes in operating assets and liabilities:
Restricted cash		606,250
Accounts receivable	559,962	(424,118)
Inventories	(1,331,575)	(524,828)
Prepaid expenses and other	(562,052)	221,778
Prepaid expenses and other - noncurrent	187,500	116,734
Accounts payable	600,690	(44,483)
Warranty settlements	(10,808)	(34,382)
Accrued and other liabilities	205,072	(2,129,711)
Net cash provided by operating activities	1,755,699	194,178
Purchased property and equipment	(147,504)	(201,804)
Patent costs paid	(2,955)	(3,631)
Net cash used in investing activities	(150,459)	(205,435)
Proceeds from exercise of stock options	340,450
Net cash provided by financing activities	340,450
Net increase (decrease) in cash and cash equivalents	1,945,690	(11,257)
Cash and cash equivalents, beginning of period	13,859,505	13,870,762
Cash and cash equivalents, end of period	15,805,195	13,859,505
Supplemental Disclosure of Cash Flow Information Cash refunded for taxes	$ (38,662)	$ (152,344)