ReviewsLow frequency Recorder

Eastar Soprano Recorder for Beginners Kids, Baroque style C Key Recorder Instrument ABS Classic 3 Piece with Cleaning Kit, Thumb Rest, Cotton Bag, Fingering Chart, Natural, ERS-21BN

✨DESIGNED FOR BEGINNERS — Stable resonator vibration makes it easy to control airflow. Mouthpiece fits well with mouthes. Thumb rest included for better handling the recorder while playing. Baroque fingering F tune, accurate for advanced learning..
✔️RELIABLE MATERIAL — Made of High-grade and safe ABS material, Eastar ERS-21BN recorder instrument has high hardness, high capacity, and lightweight. Odorless, moisture-proof and wear resistant, also enables strong frequency vibration and penetrating sound..

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8 GB Voice Recorder,Rechargeable Mini USB Voice Recorder USB Flash Drive Voice Activated Recorder Dictaphone 15 Hours Battery Life 150 Hours File Capacity for Playback Lectures Meetings Interviews

✔【Voice Recorder & USB Flash Drive 2 in 1】 USB Voice Recorder is the perfect fusion of voice recorder and USB FLASH DRIVE. It is a perfect gift....
✔【Great Capacity&High Quality】 With 8GB of internal memory, 128KBPS recording resolution and 150 hours of recording, it can sort your notes,....
✔【Easy Operation】Easy to use On/Off switch.
just plug-and-play, no drive need,Low power consumption, lasts up to 15 hrs. on a single charge.Easy....
✔【BEST AND SIMPLEST USB VOICE RECORDER】 Record sound, talks, conferences, concerts, sermons, ceremonies, training sessions, telephone....
✔【VERSATILE 】This portable recording device will change your life. Use this digital voice recorder to extend your memory, capture great ideas,....

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AUKUYEE Updated 2.4″ TFT Digital Oscilloscope Kit with Power Supply and BNC-Clip Cable Probe Q15001 (Assembled Finished Machine)

Digital DIY oscilloscope uses ARM Cortex-M3 processor and contains a 2.4-inch color TFT display, which can be used as an ARM development test board..
Let you effectively observe and measure signal waveforms in many occasions such as audio, video synchronization, low-frequency switching power supply, infrared receiving and transmitting..
Can make a tailor-made software development on the basis of this kit, which can be can be changed to millivoltmeter, data recorder, etc..
The variety of components is suitable for students to understand the oscilloscope structure and principles, and do in-line component welding, and chip component welding training..
The oscilloscope kit is a kit specially designed for professional teaching and training in electronics. Please note that this kit need to be assembled and soldered by yourself..

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32GB Mini Voice Recorder,Small Recording Device with 750 Hours Recording Capacity,Noise Reduction USB Digital Audio Recorder Rechargeable 20 Hours Battery Time for Lecture,Interview,Meeting Class

✅32GB Voice Recorder: The mini USB voice activated voice recorder is equipped with 32GB storage memory, which can save 400 hours recording files and 10000 songs. Compatible with WIN/MAC, you can easily transfer files to your computer with the included USB cable ((Please note that you need to download the WAV player in your computer to play WAV files).
✅Mini Voice Recorder: The recording time is up to 25 hours per full charge, and it can automatically save the recording file before the battery is low. And it can be fully charged within 2 hours with a USB to 3.5mm cable. Our 32GB portable voice recorder has a unique design that makes it look nothing like a voice recorder, making it stress-free to carry around. You can easily carry it in your purse, pocket or key chain.
✅PROFESSIONAL RECORDING EQUIPMENT: Professional PCM recording with dynamic noise reduction microphone, captures 512kpbs crystal-clear audio, intelligent dynamic noise reduction, besides, the professional recorder adopts PCM digital and triple noise reduction technology. Easily record your meetings, interviews, appointments, speeches, lectures.
✅Easy to use: Power on to start recording, power off to save the recording file, switch the switch to “ON/Rec” for about 5 seconds to sta....

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UNIFI Protect G4-PRO Camera

Ubiquiti UVC-NVR-2TB UniFi Plug & Play NVR stands for Network Video Recorder. Essentially, the Ubiquiti Networks UVC-NVR is a plug-and-play recording appliance with low power consumption and offers UniFi Video’s powerful IP surveillance software for a modern, easy approach to home, school, or work surveillance..
This recorder manages the UniFi Video Cameras that are set up with it - in this case, the UniFi Protect Camera G4 PRO - and records video according to rules set up in the software. The UniFi Video software is pre-installed for quick and easy deployment wherever and whenever you need it. Best of all, therefore no additional software is required. You can do everything through a highly functional Ubiquiti surveillance bundle!.
Setup is a breeze - simply plug the recorder into the network, go through the handy configuration wizard, and the installation is done. It's easy to manage storage of the video footage, as you can designate what space to use for recording, and there's easy date based features for when footage is deleted - say after a number of days. You can also send content to external USB or network storage drives. The recorder can connect up to 50 UniFi Video Cameras and support cameras at multiple locations..

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TNP Digital Audio RCA Composite Video Coaxial Cable (10 Feet) Gold Plated Dual Shielded RCA to RCA Male Connectors AV Wire Cord Plug for S/PDIF Home Theater, HDTV & Hi-Fi Systems (Black)

Premium Quality Coaxial Cable: With corrosion-resistant gold-plated contacts delivers elite full range bass for your Audio & AV equipment.
accurately transfer high bandwidth frequency quality detailed clean natural pure audio sound / realism and clarity, jitter-free video signals.
RCA Digital Coaxial Audio (Male) to RCA Digital Coaxial Audio (Male): For connecting to a stereo receiver, sound system or other A/V components to deliver superior quality video audio connectivity.
Balanced Solid Shielded Conductors: For enhanced internal noise rejection and clearer, deeper bass and eliminate strand-interaction distortion.
Solid-core bass conductor optimizes low-frequency signal transfer for improved bass response.
Oxygen Free Copper Cable: Combined with durable, yet flexible PVC exterior, double shielding alloy for a maximum audio video quality.
minimizes return loss, so music, dialogue and sound effects are always clear, dramatic, detailed in excellent signal quality.
For use with: DVD Blu-ray player, car audio system, DAC, CD player, game console, AV receiver, digital video recorder, satellite receiver, digital cable box, TV Box, computer sound card, audiophile-quality home theater cinema HiFi system and more.

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TNP Digital Audio RCA Composite Video Coaxial Cable (50 Feet) Gold Plated Dual Shielded RCA to RCA Male Connectors AV Wire Cord Plug for S/PDIF Home Theater, HDTV & Hi-Fi Systems (Gray)

Premium Quality Coaxial Cable: With corrosion-resistant gold-plated contacts delivers elite full range bass for your Audio & AV equipment.
accurately transfer high bandwidth frequency quality detailed clean natural pure audio sound / realism and clarity, jitter-free video signals.
RCA Digital Coaxial Audio (Male) to RCA Digital Coaxial Audio (Male): For connecting to a stereo receiver, sound system or other A/V components to deliver superior quality video audio connectivity.
Balanced Solid Shielded Conductors: For enhanced internal noise rejection and clearer, deeper bass and eliminate strand-interaction distortion.
Solid-core bass conductor optimizes low-frequency signal transfer for improved bass response.
Oxygen Free Copper Cable: Combined with durable, yet flexible PVC exterior, double shielding alloy for a maximum audio video quality.
minimizes return loss, so music, dialogue and sound effects are always clear, dramatic, detailed in excellent signal quality.
For use with: DVD Blu-ray player, car audio system, DAC, CD player, game console, AV receiver, digital video recorder, satellite receiver, digital cable box, TV Box, computer sound card, audiophile-quality home theater cinema HiFi system and more.

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Mini Telephone Audio Voice Recorder with 32gb Memory Landline Telephone Voice Recorder for Home & Office Analog Telephone System

Home Office Telephone Recorder: Designed for home/office telephone conversation voice recording, built in 32gb memory supports for 200 hours voice....
Reliable For Recording: Designed by Embedded lunix system with high speed MCU, makes it running stable,records crystal clear sounds from telephone....
Small Size: A small black box with two RJ11 ports for telephone line in out connection, plug the 5V USB power adapter to the recorder, system power on....
Plug & Play: Just connect the telephone cable to line in / line out port of the recorder and connect to the 5V USB power adapter to start working,....
Analog System Only: the Low power consumption telephone recorder only works with analog telephone system, does not support digital telephone system.

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72GB Voice Activated Audio Recorder, Voice Recorder for Lecture Meeting, HD Voice Recorder with Playback,Audio Recorder Portable Audio Recording Device USB MP3.

【One-Click Recording】：One-click to start or stop/save the file, which is named after the recording date and time (timestamp function) for easy file management. The recorder measures 0.3 x 1.3 x 2.1 inches (about 0.8 x 3.3 x 5.3 cm) and weighs only 0.7 ounces (about 19.8 grams). Say no to complicated steps and record important content anytime, anywhere! The recorder is perfect for lectures, conferences, interviews, courses, personal use, and more..
【Large Internal Memory Capacity And Long Battery Life】：The recorder has a built-in 72GB memory, which can record 840 hours of audio without worry, and a 320mAh rechargeable battery, which can be quickly charged within 2.5 hours and used continuously for 45 hours. The long battery life ensures this recorder is always ready to work. While charging, it works smoothly as usual, automatically saving the audio clip in the case of low battery..
【High Definition Noise Cancelling Audio Recorder 】：The audio recorder uses a high-fidelity microphone, which can record high-quality audio, ensuring that the recording time is clearly visible. This recorder is equipped with a DSP intelligent dynamic noise reduction chip, which supports up to 1536 Kbps PCM lossless recording, making the recording crystal....

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Amano PIX-95 Electronic Time Clock

Amano PIX-75 Series Time Recorder features an atomic clock and 60 Hz frequency.

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64GB Digital Voice Recorder,Fillman Voice Activated Recorder,Small Tape Recorder with Speaker, Voice Recorder for Lecture,Meetings,Class,HD Audio Dictaphone,Intelligent Noise Reduction,MP3 Player

【64GB Large Memory Digital Voice Recorders】64GB internal memory can store up to 268 hours of recording material (512kbps), Rechargeable voice recorder equipped with a 230mAh battery, voice recorder lecture can record continuously for up to 25 hours, and tape recorder can be automatically saved when the battery is low..
【Quick Recording & Easy Operation】Push the Rec/Save button to start/save recording,Don't worry about missing what you want to record, 0.96-inch high-definition color display for easy operation.Recording device Built-in speaker, recording can be played directly.(It will be better if you listen with headphones).
【High Quality Recording & DSP Noise Reduction】Equipped with a powerful DSP Noise Reduction chip and two sensitive microphones, Audio recorder can automatically reduce ambient noise and record/play high quality audio clearly. Support bit rate 3072kbps/1536kbps/512kbps..
【Voice Activated Recorder & Password Protection】After this function is turned on, tape recorder will automatically record when the surrounding sound reaches a certain decibel, and stop recording when there is no sound. This greatly saves the storage space of the recording device.You can set a four-digit password to protect your important information..

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