CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net sales	$ 5,076,029	$ 6,818,390	$ 10,418,398	$ 12,664,309
Cost of sales	3,250,441	4,574,924	6,716,157	8,605,548
Gross margin	1,825,588	2,243,466	3,702,241	4,058,761
Operating expenses:
Selling, general and administrative	875,138	883,876	1,786,882	1,749,564
Engineering, research and development	583,771	443,656	1,168,648	935,788
Total operating expenses	1,458,909	1,327,532	2,955,530	2,685,352
Income from operations	366,679	915,934	746,711	1,373,409
Other income (expense):
Amortization of debt discount	0	0	0	0
Amortization of deferred financing costs	(1,357)	(1,358)	(2,713)	(2,715)
Change in fair value of common stock warrants	34,000	(518,588)	251,203	(450,828)
Interest expense	(17,507)	(25,835)	(35,333)	(55,469)
Total other expense	15,136	(545,781)	213,157	(509,012)
Income before income taxes	381,815	370,153	959,868	864,397
Income tax expense	109,760	170,687	277,504	385,865
Net income	$ 272,055	$ 199,466	$ 682,364	$ 478,532
Basic income per common share (in Dollars per share)	$ 0.08	$ 0.06	$ 0.21	$ 0.15
Diluted income per common share (in Dollars per share)	$ 0.07	$ 0.06	$ 0.20	$ 0.15
Weighted average shares outstanding:
Basic (in Shares)	3,255,887	3,256,887	3,255,887	3,256,887
Diluted (in Shares)	3,266,133	3,260,799	3,267,192	3,262,058