<http://schema.org/description>
"Galaxy Audio Cricket Polarity/Continuity Test Set [CPTS] - Cable Testers: The CRICKET polarity tester is great for sound contractors, musicians, DJs, and many others. Polarity, should it become reversed, can play havoc with a sound system. If two sources are emitting the same electrical or acoustic tone (frequency), and one of those sources is in a state of inverted polarity,"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.avshop.ca/sound-amp-pa-audio/accessories/cable-testers/galaxy-audio-cricket-polarity-continuity-test-set>