CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Income Statement [Abstract]
Net sales	$ 1,481,915	$ 4,646,900	$ 3,119,350	$ 5,908,687
Cost of sales	(1,130,040)	(3,875,141)	(2,822,430)	(5,225,898)
Gross profit	351,875	771,759	296,920	682,789
Operating expenses:
Selling, general and administrative	1,556,022	1,353,587	3,209,843	2,423,442
Research and development	461,941	547,933	823,112	929,477
Total operating expenses	2,017,963	1,901,520	4,032,955	3,352,919
Loss from operations	(1,666,088)	(1,129,761)	(3,736,035)	(2,670,130)
Other income:
Dividend and interest income	41,254	6,916	41,282	13,721
Loss before income taxes	(1,624,834)	(1,122,845)	(3,694,753)	(2,656,409)
Provision for income taxes	(1,254)	(2,429)	(3,211)	(11,446)
Net loss	$ (1,626,088)	$ (1,125,274)	$ (3,697,964)	$ (2,667,855)
Basic net loss per common share (in Dollars per share)	$ (0.12)	$ (0.09)	$ (0.28)	$ (0.21)
Diluted net loss per common share (in Dollars per share)	$ (0.12)	$ (0.09)	$ (0.28)	$ (0.21)
Basic (in Shares)	13,455,166	12,592,341	13,271,845	12,509,110
Diluted (in Shares)	13,455,166	12,592,341	13,271,845	12,509,110
Net loss	$ (1,626,088)	$ (1,125,274)	$ (3,697,964)	$ (2,667,855)
Foreign currency translation	(8,950)	(4,750)	(21,477)	(10,363)
Comprehensive loss	$ (1,635,038)	$ (1,130,024)	$ (3,719,441)	$ (2,678,218)