SEGMENT AND GEOGRAPHIC INFORMATION (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net sales	$ 4,147,000	$ 3,655,000
United States
Net sales	3,417,000	3,189,000
North America
Net sales	4,000	11,000
Europe
Net sales	55,000	108,000
Asia/Pacific Rim
Net sales	17,000	13,000
South America
Net sales	616,000	344,000
Africa
Net sales	$ 38,000	$ 0