STATEMENT OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Net sales	$ 4,147,000	$ 3,655,000
Cost of goods sold	2,909,000	2,471,000
Gross profit	1,238,000	1,184,000
Operating expenses:
Research and development	90,000	82,000
Selling and marketing	493,000	459,000
General and administrative	1,276,000	1,236,000
Operating expenses	1,859,000	1,777,000
Operating loss	(621,000)	(593,000)
Other income / (expense):
Interest expense	(175,000)	(265,000)
Other income, net	2,000	172,000
Other income / (expense)	(173,000)	(93,000)
Net loss before tax	(794,000)	(686,000)
Income tax expense	(2,000)	5,000
Net loss	$ (796,000)	$ (681,000)
Basic and diluted loss per common share	$ (0.02)	$ (0.02)
Weighted average number of shares outstanding - basic and diluted	35,558,105	32,526,669