Condensed Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 878,000	$ 1,354,000	$ 2,988,000	$ 3,975,000
Cost of goods sold	514,000	788,000	1,815,000	2,279,000
Gross profit	364,000	566,000	1,173,000	1,696,000
Operating expenses:
Research and development	20,000	26,000	64,000	94,000
Selling and marketing	125,000	159,000	435,000	531,000
General and administrative	351,000	376,000	1,087,000	1,154,000
Operating Expenses, Total	496,000	561,000	1,586,000	1,779,000
Operating (loss) / income	(132,000)	5,000	(413,000)	(83,000)
Other income / (expense):
Interest expense	(71,000)	(70,000)	(217,000)	(204,000)
Interest income			2,000	0
Other income, net	1,000	14,000	15,000	34,000
Other income / (expense), Total	(70,000)	(56,000)	(200,000)	(170,000)
Net loss before tax	(202,000)	(51,000)	(613,000)	(253,000)
Income tax (expense) / benefit	0	2,000	(2,000)	1,000
Net loss	$ (202,000)	$ (49,000)	$ (615,000)	$ (252,000)
Basic and diluted loss per common share	$ (0.01)	$ (0.00)	$ (0.02)	$ (0.01)
Weighted average number of shares outstanding - basic & diluted	30,241,313	29,297,333	30,001,598	29,129,168