Communication Systems | McMaster-Carr

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2,269 Products

Communication

Radios

Everything from walkie talkies to CB and AM/FM radios

Headsets

Make hands-free calls from your computer, smartphone, or other device

Speaker/Microphones

Speaker/Microphones

Connect to your radio to converse without having to unclip it from your belt

Headphones

Listen to audio while blocking out the noise around you

Antennas

Mount on the outside of a vehicle for better radio reception

Telephones

Corded, cordless, outdoor, and hazardous location telephones

Telephone Cords

Telephone Cords

Connect telephones to data outlets

Telephone Connectors

Telephone Connectors

Replace the plug on your phone cord, or extend your line by connecting cords together

Telephone Splitters

Telephone Splitters

Connect multiple phone lines to a single telephone jack

Telephone Cord Swivels

Telephone Cord Swivels

Attach to your handset so the cord won't tangle when the handset rotates

Intercoms

Talk to people in different parts of your facility with the push of a button

Microphones

Communicate through speakers, public address systems, and radios

Megaphones

Amplify your voice without hooking up to a speaker

Signal Boosters

Signal Boosters

Amplify weak cellular signals to reduce dropped calls and improve download speeds

Public Address Systems

Public Address Systems

Broadcast your voice to audiences with the microphone and built-in speaker

RFID Reader/Writers

RFID Reader/Writers

Scan RFID tags and cards to track inventory or grant building access

Electrical

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Cord Reels

Electrical Cord Reels

Neatly store electrical cords for easy access

Electrical Cable

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

Edge Controllers

Edge Controllers

Use in automated systems to monitor sensors, control actuators, and support wireless connections

Human-Machine Interfaces

Human-Machine Interfaces

Control PLCs, inverters, and other automated equipment; also known as HMIs

Single-Board Computers

Single-Board Computers

Combine the functionality of a PC with the flexibility of a development board’s inputs and outputs

Programmable Logic Controllers

Programmable Logic Controllers

Program complex automation jobs by combining the functionality of a relay, timer relay, and switch

Programmable Logic Controller Communication Modules

Programmable Logic Controller Communication Modules

Connect and communicate simultaneously with multiple automation devices

Programmable Logic Controller Expansion Modules

Programmable Logic Controller Expansion Modules

Increase the number of inputs and outputs for your PLC

Programmable Logic Controller Input and Output Modules

Programmable Logic Controller Input and Output Modules

Connect switches, transmitters, and actuators to your PLC for complex automation jobs

Development Boards

Development Boards

Prototype electronics and build simple automation systems by configuring inputs and outputs

Ethernet Switches

Ethernet Switches

Expand your data network by connecting computers, printers, and servers

Fluid Handling

Pressure Transmitters

Pressure Transmitters

Send pressure readings to controllers and remote displays

Safety Equipment

Earmuffs

Dampen loud noises to protect hearing

Measuring and Inspecting

Inertial Measurement Units

Inertial Measurement Units

Mount to robot arms, cranes, and vehicles to accurately track their movements

Line Testers

Diagnose issues in telephone lines or Ethernet cables

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)