Reviews Audio Frequency Meter

Fostex T60RP Studio Headphones

  • Fostex RP diaphragm made of polyimide film with copper foil etching.
  • neodymium magnet realizes wide frequency reproduction, superior transient characteristics and high input tolerance.
  • Beautiful Wooden housing made of African Mahogany even helps give depth to the fine sound of RP diaphragm.
  • Detachable connector offers unbalanced connection, plus balanced connection for recent balanced-connection-ready DAPs.
  • headphone amps realize clear audio reproduction with noise-free, high separation.
  • Standard and optional OFC cables deliver high resolution and speedy sound over the whole frequency range.
  • Genuine Leather head pad and around-the-ear type ear pads offer great fit and fatigue-free long time use.
  • Includes headphones, 4-foot (1.2 meter) Cable and carrying Bag.
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AC Frequency Meter LED Digital Display 20-75 Hz Signal Ac Hz Frequency Indicator Light ST16HZ Round Red White Blue Green Yellow (Blue)

  • MAIN FEATURE---Produce Name: LED Hz Indicator.
  • Applicable: circuit frequency measurement.
  • 20-75Hz MEASUREMENT RANGE---The AC frequency meter is of wide measurement of 20-75Hz.
  • HIGH ACCURACY---The AC frequency meter is of high accuracy of ±2%, helping to provide you reliable data.
  • CLEAR DISPLAY---Made of high quality material, the AC frequency meter is of clear display, exquisite workmanship, long service life, and stable working performance.
  • 5 COLORS---The AC frequency meter is of 5 different colors, red, white, blue, green,yellow, you can choose one according to your preference.
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Planet Audio 12 1800 Watt Car Audio Power Single Subwoofer DVC 4 Ohm 3 Pack

  • 12 inch dual voice coil car audio subwoofer.
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VLIKE Noise Sound Level Meter, Digital Decibel Meter with LCD, Audio Measurement 30 dB to 130 dB, DB Meter with A and C Frequency Weighting for Sound Level Testing

  • The Mini Handhold Digital Sound Level Reader is compact, lightweight,easy to use,it is not only extremely wear-resisting, but also elegant.
  • Features with backlight feature,it is appropriate for gathering the sound date at night. And backlight auto power off function is provided, high-reliability and well-designed high-efficiency power supply circuit make the battery more durable.
  • This Audio DB Meter complies with IEC651 Type 2 and ANSI S1.4 Type 2,with the measuring scope from 30 to 130 dB and automatic shifting function, A and C Frequency Weighting mode selection. With Maximum(MAX) locking function and High speed(FAST)/Low speed(SLOW) response rate selection.
  • It could be called as DB reader, phonometer or SPL meter,accumulate sound level value data for noise dosimeter, can be used as a noise monitor testing sound intensity to reduce Noise pollution,avoiding the risk to hearing damage.
  • The Noise Level Meter is an instrument used to measure the ambient sound level,such as sound level around factories, workshops, schools, residential, offices, road, audio etc.It also can be appropriate for noise engineering,product quality control,health prevention and treatment,etc.
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Planet Audio 10 1500W Dual 4 Ohm Voice Coil Car Audio Power Subwoofer 3 Pack

  • 1500 watt dual 4 ohm voice coil car audio subwoofer.
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Planet Audio 10 1500W Dual 4 Ohm Voice Coil Car Audio Power Subwoofer 8 Pack

  • 1500 watt dual 4 ohm voice coil car audio subwoofer.
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Signal Generator, Multi-Function LHT00SU1 Oscilloscope 2 Channel Input Virtual Oscilloscope Logic Analyzer USB Logic Analyzer

  • 【Supported Protocols】Serial Peripheral Interface, IIC, UART, SMBus, I2S, CAN, Parallel, Custom, Search, Async, 1-Wite, PS / 2.
  • 【Multi Purpose】8-channel logic analyzer, Data Logger. PWM controller, Frequency generator. Frequency meter, Remote controller.
  • 【Dual Channel】Dual channel voltmeter, Mixed signal oscilloscopes and logic analyzer, Dual input oscilloscope (single, 16Msps, 3MHz bandwidth).
  • 【Frequency Meter】PWM controller, Frequency generator. Frequency meter, Remote controller.
  • 【100% Guarantee】High quality product, we promise to do everything possible to satisfy all customers. However, if you are not 100% satisfied with our service or our products, simply contact us. We are always at the side of our customers to support and continuously seek new ways to improve.
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Smart Meter Cover,Electric Meter Cover Shield, Faraday Cage Protection RF Shield Guard Block 5G with Adjustable Bottom Meter Cover

  • ... other sicknesses and neurological problems. We think we are keeping our children safe and we do not realize how much danger we are putting them in by exposing them to all of these electromagnetic toxins. While this Smart Meter Cover could protect us..
  • 2.√√√[Features and Functions]blocking 99% of harmful radio frequency,block yellow dust and fine dust to protect Smart Meter.This Smart Meter Cover can reduce the radiation levels of electromagnetic fields and rediofrequency emitted by smart electric meters.Eradication of ringing in the ears caused by the radiation emitted by smart electric meter.Eliminates headaches caused by EMF and Rf radiation..
  • 3.√√√[QUALITY MATERIALS]The radiation shielding Smart Meter Cover is made by Copper/ Nickel/Polyester Fiber which is certified to provide 99.999%protecting across the frequency range of 10KHz to 3GHz.The Smart Meter Cover could reduce the radiation and emf emitted from Smart Meter.Using adjustable nylon ribbon to fix the cover, compared with stainless steel ring, more safety and better sealing.You can adjust it loose or tight as needed..
  • 4. √√√ [BIG SIZE MEETS MOST SMART METER]The size of the Smart Meter Cover is 7IN * 4IN, is suitable for most round samart meters in the US and Canada. Owning ....
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Protmex Sound Level Meter, 30-130dBA 30Hz-8KHz Decibel Meter with Large LCD Screen, Temperature and Humidity Measuring, A Weighting Mode, MAX/MIN, Fast/Slow, Data Hold, Backlight, Auto-Off Functions

  • ...at can clearly show the measurement. Turn on the backlight to get the reading easily during the night and reduce the damage to the eyes.
  • 【Fast/Slow Time Weighted Selection Sound Meter】”FAST” mode response in 125 Milliseconds.
  • “SLOW” mode response in 1 second. +/-1.5dB Accuracy with 0.1dB Resolution. Frequency ranges from 30Hz to 8KHz.
  • 【Max/Min/Data Hold Function Decibel Meter】The Protmex sound level meter is easy to know the MAX and MIN dB levels recorded by the meter.
  • the decibel reader and recorder can freeze the reading on the display without worrying that the reading is too fast to record.
  • 【Wide Application Sound Decibel Meter】The decibel meter can be used in many environments and is also suitable for noise engineering, product quality control, health prevention, treatment, etc. This audio noise measurement equipment is an excellent tool to check, monitor or control and test any environmental sound level. Widely applicable to individuals, families, enterprises, learning, industry, etc.
  • 【Protmex 24/7 Support】Protmex support team is able to respond to your questions and requests within 24 hours. If you are not satisfied with the product, please feel free to consult for help.
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BTECH Mini UV-25X4 25 Watt Tri-Band Base, Mobile Radio: VHF, 1.25M, UHF Amateur (Ham)

  • What Makes the UV-25X4 Unique: Dual Synchronize Display Mode, Mic Audio Gain Settings, In depth user's guide, Auto Power Off Function, Channel Mode Editing Settings, Auto Scan, Scanning Resume, and Variable Frequency Scanning, Quad Watch Delay Time, Randomization Privacy Mode, Builds upon previous generation UV-2501+220.
  • Frequency Range: 144-148MHz (VHF), 222-225MHz (1.25M), 420-450MHz (UHF).
  • Broad (Wide) / Narrowband (Narrow) Selectable.
  • Recommended Accessories: Pair UV-25X4 with the Nagoya TB-320A Antenna (and RB-50 Magnetic Mount) for easy installation. The PC04 FTDI Cable is recommended for easy computer programming.
  • Dual Watch monitoring VHF/UHF and 220Mhz: The 220 MHz band antenna lowpass filter is switched with a relay and the 2 meter lowpass filter and 70 cm highpass filters are switched with PIN diodes - resulting in a audible relay switch noise when monitoring 220MHz with VHF/UHF simultaneously. A relay that completely isolated the 220 MHz RF filter won't impact the RF performance of the 2 meter/70 cm bands. If monitoring multiple 220MHz or VHF/UHF simultaneously the relay is not heard or used..
  • Tribander Mobile Radio Kit Includes: BTECH UV-25X4, Speaker Mic, 6 foot DC Cable with Cigarette Plug Connector, Ra....
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