Top 6 Best Noise Meter For Classroom

Decibel Meter with AC Weighting TopTes TS-501B decibel meter uses a precise condenser microphone to capture sound. Its equipped with A-weighting and C-weighting facilities that measure noise levels from 30 to 130 dB with an accuracy of 1.5 dB, Frequency from 30 to 8,000Hz. Perfect for monitoring noise levels in communities, home theaters, audio systems, automobiles, workshops, schools, offices, factories. 2.25-inch LCD Screen with Backlight This TS-501B sound level meter is measured noise levels are expressed in decibels dB and displayed on the 2.25-inch LCD screen, it easy to read on a big display design. Long press the backlight button to turn on a backlight, making it easy to view even in damn light. MAXMIN Measurement, Date Hold The sound pressure level SPL meter has Max or Min measurement values to represent the maximumminimum highlow peak value of the sound produced within a certain time, and the data hold function can freeze the current reading based on the sound measurement according to individual needs. Easy Use and Feature Packed The non-slip side design ensures that the portable noise meter fits easily in the hand. TS-501B SPL meter is a battery-operated noise meter that comes with three durable batteries and has an automatic power-off function to extend battery life. A low battery indicator will appear on the screen when the battery is low to remind the user to replace the battery in time. Whats in the Box1x TS-501B Decibel Meter, 3x AAA Batteries, 1x User Manual, 1x Carry Case. TopTes sound level meter with a 3-year Warranty and lifetime technical support. Please feel free to contact us if you have any questions or concerns.

Time Management -- What can you get done in 60 minutes Improve time management, perform tasks effectively, complete your work, and encourage productive learning with the Secura 60-minute visual classroom timer.. Easy to Use -- Turn the dial clockwise to adjust the time. To turn the timer offsimply turn back to zero. To turn off the ringer, please turn clockwise to 5 and then quickly back to 0. Requires 2 AAA batteries Not Included.. Kid friendly -- There is no loud ticking sound like a mechanical timer, just the sound of gears turning. Secura visual timer features a violet disc making it easy for children to understand the passage of time visually. Set the tone to loud or low, and the alarm time to 3 or 60 seconds.. Applications -- Great for classroom, home, and office settings. Makes an excellent classroom timer, countdown timer, study timer, toddler timer, kids timer, silent timer, kitchen timer, timer clock, time tracker, and more. Two-year Guarantee -- We provide a two-year warranty. If you have any questions about our products, please feel free to contact us and we will try our best to address them..

Unit plugs into AC 120 volt electrical outlet with included UL approved transformer Input 100-240V AC 50-60Hz, Output 9V DC 500mA or can be used with 6 AA alkaline batteries sold seperately.. Unit can be self-standing or wall-mounted.. Traffic light is computerized with adjustable sound level meter.. Red light counter registers each time the red light activates. Push reset button to reset counter to zero.. Decibel sensitivity control can be set to operator's choice. Push button to devrease sensitivity. Also offers manual operation option of staying on a given light color. Option face stickers provided to add the element of emotion ot the lights. Green light stays lit until noise in room goes above set level determined by user, green light is replaced with a flashing yellow light as a warning. When sound level reaches 15 dB above set level, the red light and siren are activated. Voice Queit Please in 4 languages or your own recording and siren otions. User has the option of turning sounds on or off. Delayed Alarm Function will sound when noise continues for more than 2 seconds..

Large Screen LCD Display.

High accuracy of 1.4 dB meets Type 2 standards. Dual range measurement High and Low and Frequency Range 31.5 Hz to 8 kHz. Easy-to-read backlit LCD display. 12 electret condenser microphone for high accuracy and long-term stability. Includes windshield ball, battery and carrying case.

Sensitive Sensor0.5s response time, no contact. Can measure noise level under any circumstances, quickly display accurate measurement result.. LCD DisplayLarge clear LCD backlight display, easy for reading enen during night. Low radiation, reduce the damage to the eyes.. Accurate MeasurementMeasuring Range 30130dBA -1.5dB Accuracy with 0.1dB Resolution.. Multi-functionData hold function MaxMin sound level measurement 15 minutes auto power off, also has alarm function when voice level is up to 130dB.. Power SupplyPowered by a 9V Battery Included.

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 MaximumMAX locking function and High speedFASTLow speedSLOW 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.

LCD Screen Super large 9.6 inch LCD digital display with backlight that makes reading more clear and visually in dark areas. Alarm Function When the measuring value is over the alarm value, the meter will make a sound beeping and lock the data with blinking for 2 minutes. Data Storage The instrument will automatically store the data every 2 seconds, and the stored value is the largest noise value in 2s, which can last for one year. USB Model Connecting computer with USB cable, you can down-load records, collect samples and print chart and date,etc. Application families, factories, offices, hotels, hospitals, laboratory, theaters and audio systems, etc.

1. Measuring range 30 to 130dB, the product operation is very convenient, it can be used only by connecting the power supply additional power supply needs 5V 1A accuracy 1.5dB reference sound pressure level, 94dB 1KHz, frequency response range 31.5Hz 8.5KHz. 2. Large 9.6-inch LCD display with backlight, powered by DC 5V 1A Micro USB socket, this meter can be used to measure noise in various occasions and accessories, such as factories, offices, homes, traffic routes, audio, air-conditioning refrigerators, etc. Wait. 3. Alarm switch setting short press the horn button to turn off the alarm and the red light goes out, then press the horn button to turn on the alarm, and the red light is on. In the normal measurement state, long press the horn key to enter the alarm setting, adjust the alarm value through the up and down keys, short press the horn key to save the alarm value, or short press the power key to cancel the setting.. 4. Note Power on, short press the switch machine button to shut down, long press the switch machine button, automatic startup function the product will automatically turn on when connected to the power supply, long press the switch machine button, it will shut down, if LCD display appears The numbers on the screen do not jump, and garbled characters appear. You need to restart the machine. If you have any questions, please contact us in time.. 5. Note The device needs an additional charger, which matches the standard 5V 1A charger. The voltage and current must not exceed 5V 1A. If it is too large, it will burn the circuit board. When using the sensor, please pay attention to whether there is any blockage of foreign matter. If the device is turned on, the LCD display does not display, and the sensor may be faulty. Please contact us in time, we will handle it for you as soon as possible..

Sound db meter calibrated at factory, noise measurement range from 0 - 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, automanual power off, disable the auto off function, sound level meter can continuously measure noise value, battery indication. Decibel meter is ideal for music recording, home theater setup, 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.

This used to measure the sound of sound equipment in Work and Life such as factories, workshops, schools, residential, office areas, traffic roads, audio and other occasions. Also applies to noise engineering, product quality control, health control and so on.. The Protmex Noise Meter With the backlight feature, it is appropriate for gathering the sound data at night. To save power, backlight auto power off function is provided.. The meter utilizes a electric condenser microphone to monitor sound levels from 30 to 130 decibels at an accuracy of -1.5 dB with a 0.1 dB resolution. A and C weighting network selection. Press the UNIT button for seconds then you can select A or C frequency weighting.. Maximum MAX locking function Digital display, good anti-interference performance, power saving. The Protmex sound meter weighs less than 7 ounces, and is designed to fit comfortably in the palm of your hand..

Max Min Hold FunctionCadrim decibel meter can record the current maximum or minimum decibel value the hold function freezes the reading on the display without worrying that the reading is too fast to record.. Accurate and Sensitive 0.5s response time, no contact. Can measure noise level under any circumstances, quickly display accurate measurement result.Measuring Range 40130dBA -3.5dB Accuracy with 0.1dB Resolution.Frequency range from 31.5 to 4Khz.When the range is exceeded, this decible meter will display OL.. Digital LCD Display Backlight Function The Digital Sound Level Meter has a large clear LCD backlight display that can show the measurement clearly. Long press Hold to turn on the backlight to get the easy reading during the night and reduce the damage to the eyes.. Auto Power-off Function When the decibel reader is not used, it will automatically turn off after 15 minutes to save battery life. With a 1x 9v battery, a single 9v battery can last for 30 hours.. Convenient and Lightweight Cadrim sound pressure level SPL meter is lightweight and easy to carry. With a mounting hole for the tripodwhich can be placed on the stand and is easier to measure when your hands are busy. It's widely used in factories, transportation, car, baby room and audio system offices, sound quality control in homes, schools,s, and construction sites..