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4. Property and Equipment
12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
Property and Equipment

4. Property and Equipment

 

At December 31, 2019 and 2018, property and equipment consists of the following:

 

   December 31, 
   2019   2018 
         
Office equipment  $36,000   $30,000 
Furniture and fixtures   5,000    5,000 
Testing equipment   37,000    37,000 
Leasehold Improvements   25,000    25,000 
Subtotal   103,000    97,000 
Less accumulated depreciation   (80,000)   (73,000)
Total  $23,000   $24,000 

 

Depreciation expense for the years ended December 31, 2019 and 2018 was $7,000 and $22,000, respectively.