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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
May 10, 2024 | Sep. 28, 2023 | Mar. 07, 2023 | Jan. 22, 2021 | May 31, 2024 | May 10, 2024 | May 31, 2023
Product Information [Line Items] |  |  |  |  |  |  |
Accumulated deficit |  |  |  |  | $ 48,195,000 |  | $ 42,217,000
Cash and cash equivalents |  |  |  |  | 4,170,000 |  | 9,719,000
Working capital |  |  |  |  | 5,527,000 |  | (10,852,000)
Shelf registration statement maximum authorized common stock issuance value | $ 5,500,000 | $ 20,000,000 |  | $ 15,000,000 |  |  |
Proceeds from issuance of common stock |  |  |  |  |  |  | 10,014,000
Sale of stock expenses |  |  | $ 700,000 |  |  |  |
Deferred Offering Costs | $ 81,000 |  |  |  |  | $ 81,000 |
Average trading volume description |  |  |  |  |  | The average trading volume of our stock over the last three full calendar months is approximately 229,000 shares per day and the high and low trading price of our stock during the same period of time was $1.25 and $0.50, respectively. |
Working capital |  |  |  |  | (5,527,000) |  | 10,852,000
Revenues |  |  |  |  | 5,415,000 |  | 5,339,000
Other receivables, gross, current |  |  |  |  | 966,000 |  | 751,000
Inventory, gross |  |  |  |  | 2,843,000 |  | 2,728,000
Property, plant and equipment, net |  |  |  |  | $ 201,000 |  | 213,000
Threshold period past due for write-off of trade accounts receivable |  |  |  |  | 90 days |  |
Allowance accounts receivable, credit loss |  |  |  |  | $ 19,000 |  | 29,000
Prepaid expense and other assets |  |  |  |  | 238,000 |  | 300,000
Inventory reserves |  |  |  |  | 467,000 |  | 672,000
Amortization of intangible assets |  |  |  |  | 18,000 |  | 18,000
Intangible asset impairment charges |  |  |  |  | 0 |  | 0
Investments |  |  |  |  | 165,000 |  | 165,000
Share-based payment arrangement, expense |  |  |  |  | 837,000 |  | 1,185,000
Proceeds from customers |  |  |  |  | 85,000 |  |
Research and development expense |  |  |  |  | 1,491,000 |  | 1,584,000
Deferred tax assets, valuation allowance |  |  |  |  | 10,369,000 |  | 8,940,000
Deferred tax assets, net |  |  |  |  | 10,369,000 |  | 8,940,000
Advertising expense |  |  |  |  | $ 101,000 |  | $ 156,000
Share-Based Payment Arrangement, Option [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share, amount (in shares) |  |  |  |  | 3,479,616 |  | 2,342,616
Polish Distributor [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Investments |  |  |  |  | $ 165,000 |  |
Equity method investment, ownership percentage |  |  |  |  | 6.00% |  |
Purchased Technology Rights [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  | 10 years |  |
Patents [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Finite-lived intangible asset, useful life |  |  |  |  | 15 years |  |
Property, Plant and Equipment [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Depreciation, depletion and amortization |  |  |  |  | $ 63,000 |  | $ 66,000
MEXICO |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Inventory, gross |  |  |  |  | 537,000 |  | 626,000
Property, plant and equipment, net |  |  |  |  | $ 14,000 |  | $ 17,000
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Distributor One [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 33.00% |  | 35.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Four Distributor [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 64.00% |  |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Distributor [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  | 36.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Distributors in Asia [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  |  |  | 37.00%
Cost of Goods and Service, Product and Service Benchmark [Member] | Supplier Concentration Risk [Member] | One Vendor [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 16.00% |  |
Minimum [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  |  | 5 years |  |
Maximum [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Property, plant and equipment, useful life |  |  |  |  | 10 years |  |
ATM Agreement [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Sale of stock, number of shares issued in transaction |  |  |  |  |  |  | 573,889
Sale of stock, consideration received on transaction |  |  |  |  | $ 2,014,000 |  |
Proceeds from issuance of common stock |  |  | 7,300,000 |  |  |  | $ 1,961,000
Sale of stock expenses |  |  | $ 700,000 |  |  |  | $ 53,000
Net proceeds from ATM (in Shares) |  |  | 3,333,333 |  |  |  |
Share price |  |  | $ 2.40 |  |  |  |
ATM Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  |  |  | $ 3.15
ATM Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |
Product Information [Line Items] |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  |  |  | $ 4.26

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