Best Glass Tube Level Meter

Decibel Meter, LONVOX Digital Sound Level Meter with 30 to 130 dBA Measuring Range, Backlit LCD Display, MAX/MIN Noise Measurement, Data Hold, SPL Meter for Classroom, Noisy Neighbor, Office, Factory

  • [Broad Measuring Range & High Precision] – LONVOX Decibel Meter features a highly sensitive and precise condenser microphone that is capable to measure noise levels from 30 to 130 dB with an accuracy of ±1.5 dB. The dB meter is A-weighted, which is ideal for the measurement of environmental noise, such as traffic noise, baby room noise, classroom noise, home theater noise, industrial noise, and so forth. The sampling rate is 2 times per second, which is ideal for dB tests in various contexts..
  • [Backlit LCD Display & Versatile Uses] – LONVOX sound level meter features a large backlit LCD display with 4 digits and 0.1 dB resolution, ensuring readouts are clearly visible, and easy operation in a low-light environment. When sound levels exceed the setup value, the backlit display will keep flashing as a visual alarm. Maximum or minimum dB level can be assessed by the sound meter. The data hold function can freeze the current readout of sound measurement based on personal needs..
  • [Ergonomic & Lightweight Design] – The sound pressure level (SPL) meter is light in weight and compact in size, which is easy to carry. The lightweight design allows long-time operation with less muscle fatigue. The compact design ensures the noise meter fits into your hand ....
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Brine Shrimp Hatchery Kits brine Shrimp Eggs Incubator Hatchery brine Shrimp Eggs Incubator Artemia Hatchery with Silver air Pump

  • Our brine shrimp incubator is designed professional for hatching brine shrimp eggs which include silver air pump air stone and aquarium tubing..
  • There are two ways to install our brine shrimp hatcher machine.You can use the four suction cup of shrimp incubator to stick it to the tank glass inside or you wanna install it out of the tank glass then you can use the tripod to install out of the tank..
  • The first way to provide oxygen to the brine shrimp incubator is to put the bubble stone in the incubator to provide oxygen. When the brine shrimp has hatched, open the trim valve at the bottom of the incubator to collect brine shrimp. Note that the direction of the inlet and outlet of the check valve must be installed correctly with the pipe, otherwise the air pump will not be able to discharge air..
  • The second way to provide oxygen to the brine shrimp from the bottom hole of the incubator. Please note the direction of the inlet and outlet of the check valve and the pipe must be installed correctly, otherwise the air pump will not be able to output air, and the trim valve needs to be opened. When the brine shrimp has hatched, first turn off the trim valve, then pull out the air pump tube from the trim valve, and then open the ....
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USDR/USDX HF QRP SDR Transceiver SSB/CW Transceiver 8-Band 5W Ham Radio & Handhel Mic

  • 【IRF Tube】Using IRF series transmitting tube to ensure its being durable & can be used to connect to an antenna (instrument base)..
  • 【Lightweight&Cost-saving】The original QCX circuit is greatly simplified, and the installed components are reduced by 50 percent to save you the trouble of complicated transformer windings and wiring procedures..
  • 【Less Power Consumption】Thanks to the EER transmitter E-level, it boasts high power efficiency and no bulky heat sink is required..
  • 【DSP Function】Automatic gain control (AGC), noise reduction (NR), voice trigger, voice trigger Xmit (VOX), RX attenuator attenuator (ATT), TX noise gate, TX driver control, volume control, dBm/S-meter..
  • 【Quality Material Handling】Laser marking aluminum laser, aluminum knobs with translucent silicone buttons..
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Icstation Non-Contact Liquid Level Sensor Switch NPN Output I65 Waterproof Pipe Level Sensor Y26 Water Detector DC 5-12V 5mA 500ms

  • It is applicable to non-metal outer wall, not necessary to directly contact with liquid, so that it can avoid liquid corrosion of strong acid or alkali, or the influence by scale or other impurities..
  • Intelligent liquid level benchmark adjustment and liquid level memory function. It can achieve multi-point serial connection and support NPN output..
  • Accurate and stable detection, it can detect boiling water liquid surface. With pure electronic structure and non-mechanical operation way, it has stable performance and long life..
  • High stability, high sensitivity, strong anti-interference capacity. it will not be affected by power frequency interference and common mode interference due to special disposals so as to compatible with 5-12V power adapter..
  • Strong compatibility, and it can penetrate into non-metal tube, such as plastic, glass, ceramic etc. Its sensing tube wall thickness can be up to 20mm and it is applicable to different shapes of container or tube level's liquid level detection..
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Extech Personal Noise Dosimeter and USB Interface with Sound Calibrator

  • Calibrates and verifies Sound Level Meter operation.
  • For use on Sound Level Meters with 0.5″ or 1.0″ microphones.
  • Measures frequency weighted noise exposure and peak (C, Z) sound level.
  • Datalog’s up to 999,999 readings when used as a sound level meter with sampling times between 1 second and 24 hours.
  • Sound level mode: displays sound level, min/max, time-averaged sound level (Leq), peak, and sound exposure level (SEL).
  • Adjustable Criterion Level, Exchange Rate and Threshold.
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NestBasics Brine Shrimp Hatchery Kits brine Shrimp Eggs Incubator Hatchery brine Shrimp Eggs Incubator Artemia Hatchery kit Machine

  • ... hatching brine shrimp when the electricity is off and after the home is powered off, the The USB air pump can be connected to the power bank to continue hatching brine shrimp..
  • There are two ways to install our brine shrimp hatcher machine.You can use the four suction cup of shrimp incubator to stick it to the tank glass inside or you wanna install it out of the tank glass then you can use the tripod to install out of the tank..
  • The first way to provide oxygen to the brine shrimp incubator is to put the bubble stone in the incubator to provide oxygen. When the brine shrimp has hatched, open the trim valve at the bottom of the incubator to collect brine shrimp. Note that the direction of the inlet and outlet of the check valve must be installed correctly with the pipe, otherwise the air pump will not be able to discharge air..
  • The second way to provide oxygen to the brine shrimp from the bottom hole of the incubator. Please note the direction of the inlet and outlet of the check valve and the pipe must be installed correctly, otherwise the air pump will not be able to output air, and the trim valve needs to be opened. When the brine shrimp has hatched, first turn off the trim valve, then pull out the air pump tube from the trim valve, and then open the ....
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Protmex Sound Level Meter, Dual Mode db Meter Decibel Meter Noise Level Meter 30-130dB Measure with Fast/Slow Selection, Backlight, Max and Data Hold Function, A/C Mode PT6708(Batteries Included)

  • 【ACCURATE AND SENSITIVE SOUND METER】The Protmex SPL meter complies with International Committee IEC651 Type 2 and American National Standard ANSI S1.4 Type2. It has a 0.5s response time, can measure noise level, and quickly display accurate measurement results.Measuring Range 30~130dB.
  • +/-1.5dB Accuracy with 0.1dB Resolution. Frequency ranges from 30Hz to 8KHz..
  • 【MAX/MIN/HOLD FUNCTION DECIBEL METER】The Protmex sound level meter with a data logger can record the current maximum or minimum decibel value.
  • the decibel reader and recorder can freeze the reading on the display without worrying that the reading is too fast to record..
  • 【DIGITAL LCD DISPLAY & BACKLIGHT FUNCTION 】The Digital Sound Level Meter has a large clear LCD backlight display that can show the measurement clearly. Turn on the backlight to get the reading easily during the night and reduce the damage to the eyes..
  • 【WIDELY 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, and 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, famili....
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Decibel Meter Sound Level Reader 30-130dB A Hand-held Sound Noise Meter with Backlight Alarm Digital Noise Meter Decibel Monitoring Tester Calibrated Audio Noise Volume Measuring Instrument

  • Sound db meter calibrated at factory, noise measurement range from 30 - 130dBA, accuracy: ±1.5dB, resolution: 0.1dB. Disable the automatic off function, sound meter can continuously measure noise value.
  • Sound meter features backlight alarm, large LCD display, maximum/ minimum noise monitor, data hold function, auto/manual power off, disable the auto off function, sound level meter can continuously measure noise value, battery indication.
  • Decibel meter is ideal for neighbors noise complaints, job-site and noise pollution monitoring.
  • Portable sound level meter is light and compact design, easy to carry with you and operate with one-hand.
  • Noise meter comes with 3 pcs AAA batteries, a wind-proof sponge ball and user manual. The decibel meter has been adjusted properly, it can be used immediately after the battery being installed..
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Decibel Meter, CURCONSA SPL Meter, Portable Sound Level Meter, 30dB to 130dB, LCD Display, can be Used in Homes, Factories and Streets（Blue）

  • ❤【Widely Used】 A decibel meter is an instrument used to measure ambient sound levels. Decibel meter can be used in homes, factories, workshops, schools, residential areas, offices, streets, hotels, hospitals, laboratories, theaters and sound systems, the scope of application is very wide and an indispensable tool in life.
  • ❤【High Precision】 The measuring range of the sound level meter is 30dB to 130dB with fast response speed and stable and reliable performance. Sound level meter is a high-precision noise meter with an accuracy of ± 2.0 dB. Real-time monitoring can give you accurate data on the sound level in the area.
  • ❤【A / C Double-weighting Measurement】 The A-weighting simulates the frequency characteristics of low-intensity human ear noise, which is suitable for the detection of ambient noise. The C-weighting simulates the frequency properties of high-intensity noises of the human ear, which are suitable for the sound pressure analysis of machine motors and machines. More professional measurement methods provide users with a more perfect user experience.
  • ❤【Fast and Slow Response Rate Conversion】 The spl meter has the function of converting the fast and slow response rate. The fast response rate uses a time constant of 125 mil....
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