The compact size and silent vibration alert enables you to conceal it on your body for private sweeping of wireless listening and video transmissions. The JM-20 PRO, with it's 5 section bar graph to detect proximity of transmitters, has also proven itself as a quality professional sweep unit. It's sturdy and durable metal case assures years of service. Powered by a rechargeable NiCad battery, unit comes complete with battery charger and earphone.
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