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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
3 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]  
Disaggregation of Revenue [Table Text Block]
In the following table, revenue is disaggregated by primary geographical market, major product line, and timing of revenue recognition.


   

Three Months Ended March 31,

 
   

2021

   

2020

 

Primary geographical markets:

               

United States

  $ 1,808,000     $ 1,320,000  

Asia

    152,000       146,000  

Other

    4,000       6,000  
      1,964,000       1,472,000  

Major product lines:

               

ODM projects

  $ 1,382,000     $ 789,000  

ODM components

    558,000       638,000  

Distribution components

    24,000       45,000  
      1,964,000       1,472,000  

Timing of revenue recognition:

               

Products transferred at a point in time

  $ 1,964,000     $ 1,472,000