11.

LINES OF CREDIT

We have a line of credit with a maximum borrowing capacity of $5.0 million with TD Bank N.A. (“TD Bank”). The amount we may borrow from this line of credit is dependent mainly on accounts receivable and inventory balances. Interest is payable monthly and is determined, at our discretion, based on (i) the Prime Rate, plus a margin percentage that is based on financial performance (not to be less than 6% in total) or (ii) an adjusted LIBOR rate (subject to a 2% interest rate floor), plus a margin percentage that is based on financial performance. The line of credit’s interest rate at December 31, 2011 was 6.25%. The line of credit expires on December 19, 2012. This line of credit is subject to (i) the same restrictive covenants and (ii) the same collateral and guarantees as the senior debt Term Loan and the senior debt Real Estate Loan described in Note 12. At December 31, 2011 and 2010, there were no outstanding borrowings on this line of credit.

CTSAS has lines of credit with a combined maximum borrowing capacity of €1.3 million ($1.7 million as of December 31, 2011), under which there were no outstanding borrowings at December 31, 2011 and 2010. The lines’ interest rates are variable, based on the Euro Overnight Index Average and the 3-month Euro Interbank Offered Rate. The lines are collateralized by substantially all business assets of CTSAS. The lines have indefinite termination dates, but can be renegotiated periodically.