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BUSINESS ACTIVITY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Warranty liabilities (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2023
Jun. 30, 2023
Product Warranty Liability [Line Items]    
Period of right to return defective products 3 years  
Product warranty liability, beginning of period $ 53,000 $ 55,000
Accruals for warranties issued 61,000 162,000
Settlements made (53,000) (164,000)
Product warranty liability, end of the period $ 61,000 $ 53,000
Maximum [Member]    
Product Warranty Liability [Line Items]    
Warranty Period 3 years  
Minimum [Member]    
Product Warranty Liability [Line Items]    
Warranty Period 1 year