Electronic Ear Muff, 18dB, Behind-the-Neck. Communication headsets and earpieces combine hearing protection with the ability to connect to a radio network for hands-free communication between compatible devices. They also prevent those nearby from overhearing incoming communications to maintain privacy and avoid distraction. Listen-only devices allow the user to receive voice and audio messages while two-way devices allow the user to give and receive messages. These headsets and earpieces are ideal for maintaining communication between different areas of a workplace and coordinating teamwork at construction sites, emergency scenes, refineries, airports, and other loud settings. Listen-only headsets connect to an external radio, walkie-talkie, or personal audio device to give users the ability to receive messages or listen to music or other audio. When used with a walkie-talkie, they also allow users to transmit messages. They have ear muffs that fit over the ears to insulate against outside noise and a cord for plugging into a compatible device. They’re also more visible than ear plugs for confirming that workers are complying with hearing safety rules. Grainger Part #:3THH9. Add to Favorite Sellers. Sign up to Newsletter. View more great items! These items are intended to be used in North America. Power adapters and other modifications may be necessary for proper operation in other countries. GRAINGER STANDARD TERMS AND CONDITIONS. Please read these terms and conditions carefully. They contain important information concerning customer? Legal rights, warranties, obligations and available dispute resolutions remedies. They also provide that if Grainger is unable to resolve any matter to Customer? S satisfaction, Customer will exclusively use arbitration to decide the dispute and Customer will bring its claim solely on an individual basis and not in a class action or representative proceeding. 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