Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.23.2
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Product Information [Line Items]    
Allowance for doubtful accounts $ 0 $ 0
Allowance for sales discounts, rebates, distributor fees and returns 16,000 81,000
Inventory reserves 236,000 218,000
Transfers in or out of Level 3 0 0
Research and development expenses 207,000 125,000
Advertising costs 156,000 86,000
Revenues 13,272,000 12,628,000
Foreign currency translation adjustment 894,000 267,000
Foreign currency transaction loss 692,000 579,000
Accumulated other comprehensive loss 3,418,000 4,312,000
Shipping and Handling [Member]    
Product Information [Line Items]    
Revenues $ 42,000 $ 52,000
Customer A [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 22.00%  
Customer A [Member] | Net Revenues [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 16.00% 21.00%
Customer D [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 21.00% 15.00%
Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration   20.00%
Customer B [Member] | Net Revenues [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 18.00% 17.00%
Customer E [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration   14.00%
Customer C [Member] | Net Revenues [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 11.00% 10.00%