WESTLAKE VILLAGE, Calif.--(BUSINESS WIRE)--Interlink Electronics, Inc (OTC: LINK), a global leader in human-machine interface and sensor technologies, today announced their unaudited results for the first quarter ended March 31, 2015. First Quarter Results 2015 vs. 2014 Revenue increased 31.8% to $2,257,000 from $1,713,000; Gross margin was 50.6%, compared to 44.1%; Total operating expenses were 39.4% of revenues compared to 51.6%; Operating income was $251,000 compared to an operating loss of