May Promotion 20% off the Otis OI-7530XP WireFree Relayer

Receive 20% off the Otis OI-7530XP WireFree Relayer through May 31! Key feature: compact and portable unit with easily visible LED strobe light(s) and various optional sirens ranging from 100-150 db. Learn more at http://www.h2solutionsinc.com/otis-instruments.html
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