CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Net sales	$ 1,814,214	$ 3,542,077
Cost of sales	1,332,901	2,300,787
Gross margin	481,313	1,241,290
Operating expenses:
Selling, general and administrative	566,525	706,286
Litigation costs	39,271	382,512
Engineering, research and development	517,323	615,273
Total operating expenses	1,123,119	1,704,071
Loss from operations	(641,806)	(462,781)
Other income (expense):
Proceeds from life insurance	0	92,678
Amortization of deferred financing costs	0	(1,357)
Change in fair value of common stock warrants	0	95,000
Interest income	998	0
Interest expense – judgment	(71,220)	0
Interest expense	(34,045)	(9,631)
Total other income (expense)	(104,267)	176,690
Loss before income taxes	(746,073)	(286,091)
Income tax expense	0	0
Net loss	(746,073)	(286,091)
Preferred stock dividends	(60,000)	0
Net loss attributable to common shareholders	$ (806,073)	$ (286,091)
Net loss per share:
Basic loss per common share (in Dollars per share)	$ (0.25)	$ (0.09)
Diluted loss per common share (in Dollars per share)	$ (0.25)	$ (0.12)
Weighted average shares outstanding:
Basic (in Shares)	3,255,887	3,255,887
Diluted (in Shares)	3,255,887	3,266,540