Condensed Consolidated Balance Sheets (Unaudited) - USD ($)	Feb. 28, 2025	May 31, 2024
Current Assets:
Cash and cash equivalents	$ 3,058,000	$ 4,170,000
Accounts receivable, net	1,268,000	947,000
Inventories, net	1,655,000	2,376,000
Prepaid expenses and other	223,000	238,000
Total current assets	6,204,000	7,731,000
Property and equipment, net of accumulated depreciation and amortization of $1,444,000 and $1,394,000 as of February 28, 2025 and May 31, 2024, respectively	151,000	201,000
Right-of-use assets, net of accumulated amortization of $1,143,000 and $910,000 as of February 28, 2025 and May 31, 2024, respectively	509,000	742,000
Investments	165,000	165,000
Intangible assets, net of accumulated amortization of $63,000 and $48,000 as of February 28, 2025 and May 31, 2024, respectively	234,000	212,000
Other assets	113,000	203,000
Total Assets	7,376,000	9,254,000
Current Liabilities:
Accounts payable and accrued expenses	632,000	1,138,000
Accrued compensation	612,000	655,000
Advance from customers	55,000	85,000
Lease liabilities, current portion	350,000	326,000
Total current liabilities	1,649,000	2,204,000
Lease liabilities, net of current portion	193,000	459,000
Total Liabilities	1,842,000	2,663,000
Commitments and contingencies (Note 6)
Shareholders’ Equity:
Preferred stock value
Common stock, $0.08 par value, 25,000,000 shares authorized, 20,366,005 and 16,821,646 issued and outstanding at February 28, 2025 and May 31, 2024, respectively	1,629,000	1,346,000
Additional paid-in capital	55,642,000	53,542,000
Accumulated other comprehensive loss	(113,000)	(102,000)
Accumulated deficit	(51,624,000)	(48,195,000)
Total Shareholders’ Equity	5,534,000	6,591,000
Total Liabilities and Shareholders’ Equity	7,376,000	9,254,000
Series A Preferred Stock [Member]
Shareholders’ Equity:
Preferred stock value