Condensed Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net sales	$ 895,000	$ 878,000	$ 2,775,000	$ 2,988,000
Cost of goods sold	536,000	514,000	1,805,000	1,815,000
Gross profit	359,000	364,000	970,000	1,173,000
Operating expenses:
Research and development	23,000	20,000	62,000	64,000
Selling and marketing	131,000	125,000	350,000	435,000
General and administrative	286,000	351,000	968,000	1,087,000
Operating Expenses, Total	440,000	496,000	1,380,000	1,586,000
Operating loss	(81,000)	(132,000)	(410,000)	(413,000)
Other income / (expense):
Interest expense	(66,000)	(71,000)	(200,000)	(217,000)
Interest income	0	0	0	2,000
Other income, net	3,000	1,000	172,000	15,000
Other income / (expense), Total	(63,000)	(70,000)	(28,000)	(200,000)
Net loss before tax	(144,000)	(202,000)	(438,000)	(613,000)
Income tax expense	0	0	(2,000)	(2,000)
Net loss	$ (144,000)	$ (202,000)	$ (440,000)	$ (615,000)
Basic and diluted loss per common share	$ (0.00)	$ (0.01)	$ (0.01)	$ (0.02)
Weighted average number of shares outstanding - basic & diluted	32,545,776	30,241,313	32,479,123	30,001,598