CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($)	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Revenues	$ 1,559,100	$ 1,444,500
Cost of revenues	889,500	849,400
Gross profit	669,600	595,100
Operating expenses:
General & administrative	412,400	408,200
Selling	216,800	167,000
Research & development	115,400	85,400
Total operating expenses	744,600	660,600
Loss from operations	(75,000)	(65,500)
Other income (expense):
Investment income	200	400
Other income (expense)	5,400	(4,700)
Interest expense	(200)	(8,100)
Total other income, (expense) net	5,400	(12,400)
Loss before income tax expense (benefit)	(69,600)	(77,900)
Income tax expense (benefit):
Current	(36,300)	0
Deferred	15,500	(17,800)
Total income tax benefit	(20,800)	(17,800)
Net loss	$ (48,800)	$ (60,100)
Basic and diluted loss per common share	$ (0.03)	$ (0.04)