CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Sales:
Product	$ 3,087,984	$ 3,475,171
Engineering development contracts		348,876
Returns and allowances		(458,181)
Total net sales	3,087,984	3,365,866
Cost of sales:
Product	1,593,268	1,740,703
Engineering development contracts		87,349
Total cost of sales	1,593,268	1,828,052
Gross profit	1,494,716	1,537,814
Operating expenses:
Research and development	923,721	1,085,988
Selling, general and administrative	1,622,555	2,047,121
Total operating expenses	2,546,276	3,133,109
Operating loss	(1,051,560)	(1,595,295)
Interest income	9,624	9,876
Other income	21,431	19,114
Loss before income taxes	(1,020,505)	(1,566,305)
Income tax benefit	(138,886)	(371,331)
Net loss	$ (881,619)	$ (1,194,974)
Net loss per common share:
Basic (in dollars per share)	$ (0.05)	$ (0.07)
Diluted (in dollars per share)	$ (0.05)	$ (0.07)
Weighted average shares outstanding:
Basic (in shares)	16,783,129	16,716,014
Diluted (in shares)	16,783,129	16,716,014

The aggregate total costs or benefit related to selling a firm's product and services, as well as all other general and administrative expenses(benefit). Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

No definition available.