Communications devices, equipment, and systems transmit data in electronic form using either cabling or radio signals.

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Automated voice answering systems are used to take messages and to provide automated information retrieval requests.
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Fax Machines (13 suppliers)

Fax machines are used to send and receive documents that are transmitted as a stream of audio data over a telephone line.
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Global positioning system (GPS) instruments and GPS devices are radio-navigational devices that provide accurate position information about objects on Earth, based on information from orbiting satellites.
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Intercoms (238 suppliers)

Intercoms are an electronic communications system generally composed of fixed microphone/speaker units connected to a central control device.
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LiDAR Sensors (19 suppliers)

LiDAR, light detection and ranging, is an active remote sensing technique where a sensor emits and receives a pulsed electromagnetic signal in order to detect the distance to a target object and capture three dimensional images.
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Magnetic Receivers (4 suppliers)

Magnetic receivers use the electromagnetic principle to receive and analyze signals. The simplest of these devices is the telephone.
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Navigational instruments include products such as distance meters, range finders and mapping systems.
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Pagers (43 suppliers)

Pagers are electronic communications devices that are used to notify or alert a user about an event. They beep, vibrate, flash, display text, and use other alerts or methods of notification.
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Phone Switchboards (59 suppliers)

Phone switchboards are used for routing telephone calls and adding advanced features to telephone systems.
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Radar systems and radar products have synchronized transmitters and receivers that send radio waves and detect their reflections from objects, surfaces or sub-surface structures.
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Radios (371 suppliers)

Radios are communication systems that send and/or receive electromagnetic waves. Devices such as citizens’ band (CB) radios, walkie-talkies, and handie-talkies are two-way radios that can be used for interpersonal communications.
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Telephone components and telephone accessories are used in telephone systems.
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Telephones and cellular phones convert voice or other sound signals into a form that can be transmitted to another device that receives and reconverts the waves back into sound.
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