Consolidated Statements of Operations - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 15,774,943	$ 12,116,050
Cost of sales	8,365,042	6,698,830
Gross margin	7,409,901	5,417,220
Selling, general and administrative	2,477,548	2,215,521
Litigation expenses	140,050	234,720
Engineering, research and development	2,239,811	2,312,043
Total operating expenses	4,857,409	4,762,284
Income from operations	2,552,492	654,936
Interest income	5,819	4,005
Change in fair value of common stock warrants	(73,000)	(43,500)
Interest expense	(55,557)	(100,750)
Interest expense – judgment	(342,544)	(310,663)
Interest expense - related parties	0	(990)
Total other (expense) income	(465,282)	(451,898)
Income before income taxes	2,087,210	203,038
Benefit for income taxes	(2,649,280)	0
Net income	4,736,490	203,038
Deemed dividend related to beneficial conversion feature of Series B Convertible Preferred Stock	0	(420,000)
Preferred dividends	(320,000)	(312,807)
Net income (loss) attributable to common shareholders	$ 4,416,490	$ (529,769)
Basic income (loss) per common share (in Dollars per share)	$ 1.36	$ (0.16)
Diluted income (loss) per common share (in Dollars per share)	$ 0.95	$ (0.16)
Weighted average number of shares outstanding
Basic (in Shares)	3,255,887	3,255,887
Diluted (in Shares)	4,960,665	3,255,887