Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Nov. 30, 2024	May 31, 2024
Current Assets:
Cash and cash equivalents	$ 2,372,000	$ 4,170,000
Accounts receivable, net	1,326,000	947,000
Inventories, net	1,789,000	2,376,000
Prepaid expenses and other	458,000	238,000
Total current assets	5,945,000	7,731,000
Property and equipment, net of accumulated depreciation and amortization of $1,428,000 and $1,394,000 as of November 30, 2024 and May 31, 2024, respectively	167,000	201,000
Right-of-use assets, net of accumulated amortization of $1,064,000 and $910,000 as of November 30, 2024 and May 31, 2024, respectively	588,000	742,000
Investments	165,000	165,000
Intangible assets, net of accumulated amortization of $57,000 and $49,000 as of November 30, 2024 and May 31, 2024, respectively	236,000	212,000
Other assets	173,000	203,000
Total Assets	7,274,000	9,254,000
Current Liabilities:
Accounts payable and accrued expenses	848,000	1,138,000
Accrued compensation	601,000	655,000
Advances from customers	85,000	85,000
Lease liabilities, current portion	342,000	326,000
Total current liabilities	1,876,000	2,204,000
Lease liabilities, net of current portion	284,000	459,000
Total Liabilities	2,160,000	2,663,000
Commitments and contingencies (Note 6)
Shareholders’ Equity:
Preferred stock value
Common stock, $0.08 par value, 25,000,000 shares authorized, 18,336,994 and 16,821,646 issued and outstanding at November 30, 2024 and May 31, 2024, respectively	1,467,000	1,346,000
Additional paid-in-capital	54,220,000	53,542,000
Accumulated other comprehensive loss	(112,000)	(102,000)
Accumulated deficit	(50,461,000)	(48,195,000)
Total Shareholders’ Equity	5,114,000	6,591,000
Total Liabilities and Shareholders’ Equity	7,274,000	9,254,000
Series A Preferred Stock [Member]
Shareholders’ Equity:
Preferred stock value