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Property and equipment, net - Note 6
12 Months Ended
Dec. 31, 2014
Notes to Financial Statements  
Property and equipment, net - Note 6

6. Property and equipment, net

Property and equipment consists of the following:

            December 31,
            2014     2013
Production equipment         $ 3,078,000    $ 2,943,000 
Leasehold improvements           494,000      502,000 
Computer hardware and software/lab equipment           4,486,000      4,373,000 
Office furniture and equipment           1,087,000      1,100,000 
            9,145,000      8,918,000 
Less: Accumulated depreciation           (8,251,000)     (7,853,000)
          $ 894,000    $ 1,065,000 

Depreciation expense was $414,000 and $923,000 in 2014 and 2013, respectively.

The capital leases are collateralized by the related assets financed and by security deposits held by the lessors under the lease agreements. The cost and accumulated depreciation of equipment under capital leases was $704,000 and $704,000, respectively, at December 31, 2014 and 2013.