Quarterly report pursuant to Section 13 or 15(d)

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2021
Product Information [Line Items]                
Net loss $ 436 $ 739 $ 1,549 $ 1,859        
Net cash used in operations     2,804 2,311        
Cash and cash equivalents 292   292   $ 211      
Line of credit 71   71          
Stockholders equity 16,632 21,391 16,632 21,391 18,181 $ 17,068 $ 22,130 $ 23,250
Working capital 15,391   15,391          
Net sales 5,587 $ 4,274 9,777 $ 7,983        
Warranty reserve accrual $ 600   $ 600   $ 600     $ 600
Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Revenue from Rights Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 97.00% 99.00% 96.00% 99.00%        
Largest Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     73.00%   74.00%      
Largest Customer Two [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     12.00%   15.00%      
Largest Customer Three [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     10.00%          
Largest Vendor One [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     19.00%   51.00%      
Largest Vendor Two [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     11.00%   3.00%      
Largest Vendor Three [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk     5.00%   3.00%      
Australia, Dollars                
Product Information [Line Items]                
Cash $ 6   $ 6   $ 8      
Romania, New Lei                
Product Information [Line Items]                
Cash 18   18   $ 23      
International Sales [Member]                
Product Information [Line Items]                
Net sales 1,641 $ 74 2,766 $ 112        
UNITED STATES                
Product Information [Line Items]                
Net sales $ 3,947 $ 4,200 $ 7,011 $ 7,870        
UNITED STATES | Largest Customer One [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 49.00% 88.00% 49.00% 89.00%        
Non-US [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Revenue from Rights Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 29.00% 2.00% 28.00% 1.00%        
Non-US [Member] | Largest Customer Two [Member] | Sales to Telecommunications Customers [Member] | Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member]                
Product Information [Line Items]                
Concentration risk 26.00%   26.00%