Consolidated Statements Of Operations - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Revenue from External Customer [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic	$ (309,022)	$ (150,188)	$ (70,968)	$ (274,241)
Revenues	$ 2,416,127	$ 2,324,907	$ 7,791,953	$ 7,636,789
Weighted average shares - basic	7,415,329	7,415,329	7,415,329	7,415,329
Cost of Goods and Services Sold	$ 1,477,651	$ 1,383,267	$ 4,681,088	$ 4,552,956
Research and development	229,315	215,700	780,943	669,551
Other Nonoperating Income (Expense)	0	0	506,305	0
Interest income	31	158	213	890
Interest Expense	4,134	5,398	13,017	16,385
Loss from operations	(291,913)	(132,225)	(525,451)	(220,047)
Net loss	(296,016)	(137,465)	(31,950)	(235,542)
Preferred Stock Dividends, Income Statement Impact	13,006	12,723	39,018	38,699
Marketing, general and administrative	1,001,074	858,165	2,855,373	2,634,329
Costs and Expenses	2,708,040	2,457,132	8,317,404	7,856,836
Nonoperating Income (Expense)	$ (4,103)	$ (5,240)	$ 493,501	$ (15,495)
Earnings (Loss) Per Share, Basic	$ (0.04)	$ (0.02)	$ (0.01)	$ (0.04)
Weighted Average Number of Shares Outstanding, Diluted	7,415,329	7,415,329	7,415,329	7,415,329
Earnings (Loss) Per Share, Diluted	$ (0.04)	$ (0.02)	$ (0.01)	$ (0.04)
Costs and expenses:
Cost of Goods and Services Sold	$ 1,477,651	$ 1,383,267	$ 4,681,088	$ 4,552,956
Marketing, general and administrative	1,001,074	858,165	2,855,373	2,634,329
Research and development	229,315	215,700	780,943	669,551
Total costs and expenses	2,708,040	2,457,132	8,317,404	7,856,836
Loss from operations	(291,913)	(132,225)	(525,451)	(220,047)
Other (expense) income:
Other Nonoperating Income (Expense)	0	0	506,305	0
Interest income	31	158	213	890
Interest expense	(4,134)	(5,398)	(13,017)	(16,385)
Total other (expense) income	(4,103)	(5,240)	493,501	(15,495)
Net loss	(296,016)	(137,465)	(31,950)	(235,542)
Preferred Stock Dividends, Income Statement Impact	13,006	12,723	39,018	38,699
Net Income (Loss) Available to Common Stockholders, Basic	$ (309,022)	$ (150,188)	$ (70,968)	$ (274,241)
Net income (loss) per share
Earnings (Loss) Per Share, Basic	$ (0.04)	$ (0.02)	$ (0.01)	$ (0.04)
Earnings (Loss) Per Share, Diluted	$ (0.04)	$ (0.02)	$ (0.01)	$ (0.04)
Weighted average shares - basic	7,415,329	7,415,329	7,415,329	7,415,329
Weighted Average Number of Shares Outstanding, Diluted	7,415,329	7,415,329	7,415,329	7,415,329
Geographic Concentration Risk [Member]
Revenue from External Customer [Line Items]
Revenues				$ 7,637,000
Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Revenue from External Customer [Line Items]
Revenues	$ 2,416,000	$ 2,325,000	$ 7,792,000	7,637,000
International [Member] | Geographic Concentration Risk [Member]
Revenue from External Customer [Line Items]
Revenues				3,123,000
International [Member] | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Revenue from External Customer [Line Items]
Revenues	1,150,000	1,218,000	3,541,000	3,123,000
Product [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,259,860	2,098,038	7,261,134	6,937,750
Service [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 156,267	$ 226,869	$ 530,819	$ 699,039