ReviewsCommunication Testing

Koss GMR-540-ISO USB Over-Ear Gaming Headphones Two Cords with Microphone Included Black Closed-Back USB

  • On-Ear, double-sided design (click here for single-sided), Lightweight design for all-day comfort.
  • Soft, pillow-like on-ear cushions, Form fitting Koss D-Profile.
  • Noise canceling electret microphone, Flexible microphone arm.
  • Ideal for: Conference calls, telephony, language learning software, listening labs, testing, gaming or hands free office/business communication. Works....
Check Stock

Cobra MRHH350FLT Floating VHF Radio (Renewed)

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com.
  • Floating - Never lose your radio. Floating design and orange core makes retrieving radio easy if dropped overboard..
  • 6 Watt VHF - Select between 1, 3 and 6 Watts for short and long range communication..
  • Ultra-Compact Design - Ergonomic and compact design is easy to hold and intuitive to operate..
  • ALL NOAA weather channels - Instant access to national All Hazards and weather information, 24 hours a day..
Check Stock

UNI-T UTG962 Function Generator Arbitrary Waveform Generator Kit Frequency Generator RF Signal Generator 60MHz 2 Channel 200MSa/s 14 Bits Dual-Channel

  • ...ds of testing meters and instruments i.e. oscilloscope, electromagnetic pulse generator, rife machine, tone generator, thermal camera, clamp meter, voltage testers..
  • UNI-T WARRANTY - A trouble-free experience with 100% 18-MONTH WARRANTY and 100% MONEY BACK GUARANTEE by UNI-T Direct!.
  • Precise & Accurate for education, communication, electrical signal generation, laboratory. Design, test, troubleshoot, and repair of electronic and electroacoustic devices, ie circuit and equipment testing in cellular and wireless systems, broadcasting, television and radio systems.
Check Stock

Koss CS300-USB Double-Sided On-Ear Communication Headset Noise Cancelling Electret Microphone Flexible Microphone Arm Wired with USB Plug Black

  • D-Profile creates the perfect fit and seal, Lightweight design for all-day comfort.
  • Flexible, hands free electret noise-cancelling microphone.
  • Ideal for: Conference calls, telephony, language learning software, listening labs, testing, gaming or hands free office/business communication. Works....
Check Stock

Full Version USB Hart Modem WS232UP Hart -USB Modem Hart Transmitter with Built-in 24VDC & Loop Resistor for All HART Device

  • The Latest Full Version USB HART MODEM WS232UP, With Built-in 24V DC & Loop Resistor, Windows XP/7/8/10 Support, Suitable For All Devices Which Support HART Protocol, etc..
  • The WS232UP USB-HART Modem provides a complete and flexible PC communication link to HART networks and power kit and loop resistor, for commissioning, servicing, calibrating, or acquiring data from any HART instrument or transmitter. The WS232UP is developed based on BELL202 modem standard, this external interface is rugged and compact and ideal choice for field service, commissioning, engineering, training, table top shows, lunch and learns and demo cases..
  • Fully HART compliant for communication with any HART instrument and error-free slave testing * DC-DC isolation power draws from USB port and needs no external power supply.
  • * Three modes: 1) 24VDC/270Ω. 2) Normal. 3) 270Ω. The mode is easily slide-switch selected so you’ll always have a power supply or loop resistor with you * Easy installation and use, this modem can power all 2-wire HART devices-independent of supplier.
  • * Rugged aluminium alloy case gives you industrial-grade reliability in a small package * Free HART application software for you to configure your HART device * Smart Design, smaller than a normal name card.
Check Stock

Koss CS195 USB Single-Sided On-Ear Communication Headset Noise-Cancelling Electret Microphone Flexible Microphone Arm Wired with USB Plug Black

  • D-Profile creates the perfect fit and seal, Lightweight design for all-day comfort.
  • Flexible, hands free electret noise-cancelling microphone, USB Connection.
  • Ideal for: Conference calls, telephony, language learning software, listening labs, testing, gaming or hands free office/business communication. Works....
Check Stock

Outdoor Tech Chips 2.0 Universal Wireless Bluetooth Helmet Audio + Walkie-Talkie OT0052 Renewed

  • This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic....
  • 40mm drivers for clear Bluetooth wireless Audio + walkie-talkie for any Audio compatible helmet.
  • HELMET COMPATIBILITY:The CHIPS 2.0 are compatible....
  • Dot walkie-talkie app provides push-to-talk communication with your Crew with limitless range.
  • Two-button glove-friendly controls adjust volume, change tracks, play, pause, take calls and use Siri (voice control) through the built-in microphone.
  • 10 hours of playtime on a single charge so you can ride all day listening to smooth Jazz without Concern.
Check Stock

KEYESTUDIO Motor Driver HAT Breakout Board for BBC Microbit TB6612FNG with Terminal Block Serial Pins

  • Specially researched and developed this motor driver breakout board to facilitate the micro bit to drive DC motor..
  • Four motor control modes: Forward/Reverse /Brake /Stop.Access to 3Pin headers connection..
  • Integrated with 3.3V and 5V voltage-regulator chip. Comes with a serial communication port for Bluetooth module..
  • EXCELLENT QUALITY: solder is very clean, everything is aligned nicely, all boards are well packed after function,voltage, current testing, protected in a beautiful box..
  • Up to FCC and CE Standard: made from environmentally friendly components and materials, as well as environmentally friendly production technology, it is really safe..
Check Stock

mykit Ethernet Cable Toner Tracer Tone Generator Receiver Probe Wand, Basic Butt Set Telephone Test Set, Carry Pouch, for Toning Tracing Voice/Data Lines, Troubleshoot Phone Wiring/Ethernet Cabling

  • Network cable toner and probe provides clear and precise tracing of communication cabling, tests RJ11and RJ45 terminated cables for mis-wires, open and short faults, locates cables safely and effectively at patch panels, switches, termination blocks or hidden within bundles.
  • Ethernet cable/phone line toner and tester provides you tone and trace Cat5 Cat5e Cat6 cable or telephone line effectively, RJ11 RJ45 cable sequence collation, continuity test, DC positive negative polarity detection.
  • Basic butt set is great for the occasional testing the phone lines of alarm systems, fax lines, elevator or other emergency lines, test tone on faxes and panels as needed, or used as a temporary communication handset (no speakerphone).
  • Basic telephone test set comes with alligator clamp and a 66 block tip as well as a coupler, so it can offers three ways to connect to the line. The small telephone has the functions including FSK/DTMF dual system caller ID (only the number), dial tone, dial out, on off hang up, redial the last number.
  • What's in the Box: cable toner and probe, RJ11 line, RJ45 c....
Check Stock

RadiArmor EMF Blocking Hat – Unisex Hat with EMF Blocking Liner That Blocks Over 99% of High Frequency RF Radiation Black

  • OVERVIEW – RadiArmor’s unisex EMF blocking hat features a breathable liner made of woven silver fibers that blocks over 99% of high frequency RF and millimeter wave radiation commonly associated with WiFi, cellular and 5G communication..
  • LAB VERIFIED – Breathable woven silver fabric is lined throughout the perimeter of the hat and is third party verified to block 99.9% of high frequency RF. Average reduction to the head inside the hat exceeds 90%. NOTE: This hat protects your head, not your whole body. Only a faraday cage can block RF from your whole body. When testing using an RF reader, please measure inside the hat. See testing instructions below..
  • INTEGRITY: Many EMF protection products claim 99% reduction but are referring only to the radiation blocking material itself, NOT the protection you receive. Wearing a pendant that blocks EMF offers as much a protection as a waterproof pendant would protect you in the rain. At RadiArmor, we only make EMF protection products that provide real protection..
  • SIZING – This unisex hat features an adjustable strap and is designed to fit most size heads. May not be suitable fo....
Check Stock

RiteAV - Direct Burial/Outdoor LC-LC 2-Strand Fiber Optic Cable - Multimode (50/125) - 75M (246ft)

  • ...ed on optical fiber jumpers for 15 years. Each cable is produced after strict testing to meet the needs of modern people. The quality and insertion loss are strictly guaranteed. It is compatible with all standard optical fiber equipment and connectors. It can be used in all kinds of optical fiber LAN, optical fiber communication system, cable TV and other communication equipment. Very trustworthy..
Check Stock