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 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Dec. 31, 2021
Product Information [Line Items]        
Net loss $ 1,113 $ 1,120    
Net cash used in operations 1,156 847    
Cash and cash equivalents 119   $ 211  
Line of credit 664      
Stockholders equity 17,068 22,130 18,181 $ 23,250
Working capital 15,880      
Net sales 4,190 $ 3,709    
Warranty reserve accrual $ 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 95.00% 99.00%    
Largest Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 77.00%   90.00%  
Largest Customer Two [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 11.00%      
Largest Vendor One [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 44.00%   51.00%  
Largest Vendor Two [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 6.00%   3.00%  
Largest Vendor Three [Member] | Accounts Payable [Member] | Supplier Concentration Risk [Member]        
Product Information [Line Items]        
Concentration risk 5.00%   3.00%  
Romania, New Lei        
Product Information [Line Items]        
Cash $ 20   $ 23  
International Sales [Member]        
Product Information [Line Items]        
Net sales 1,125 $ 39    
AUSTRALIA        
Product Information [Line Items]        
Cash 11   $ 8  
UNITED STATES        
Product Information [Line Items]        
Net sales $ 3,065 $ 3,670    
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 49.50% 90.20%    
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 22.00% 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 26.70%