WARRANTY LIABILITY

6 Months Ended

Jun. 30, 2011

Product Warranties Disclosures [Abstract]

Product Warranty Disclosure [Text Block]

NOTE 9 - WARRANTY LIABILITY

The Company offers to its customers warranties against product defects for periods primarily ranging from one to three years.  Certain products carry limited lifetime warranties. The Company’s typical warranties require it to repair or replace the defective products during the warranty period at no cost to the customer. At the time the product revenue is recognized, the Company records a liability for estimated costs under its warranties, which are estimated based on historical experience. The Company periodically assesses the adequacy of its recorded warranty liability and adjusts the amounts as necessary. While the Company believes that its estimated liability for product warranties is adequate, the estimated liability for the product warranties could differ materially from future actual warranty costs.

 Changes in the Company’s warranty liability, included in other accrued liabilities, were as follows:

	Six months ended June30,
	2011			2010
Balance, beginning of period	$	250,000		$	183,000
Warranties issued and changes in estimated pre-existing warranties		221,000			211,000
Actual warranty costs incurred		(254,000	)		(166,000	)
Balance, end of period	$	217,000		$	228,000