Extech 407730: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy
Extech 407730 Information
Introduction
The Extech 407730 is a digital sound level meter that measures sound levels from 40 to 130dB with an accuracy of 2dB. It features a large, 2,000-count LCD display with dual reading displays, a fast-responding analog bar graph, and the ability to choose A or C weighting. The meter also includes a max hold function to capture the highest reading, and a microphone wind screen to reduce wind noise.
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Specifications
| Feature | Specification |
|---|---|
| Sound level range | 40 to 130dB |
| Accuracy | 2dB |
| Resolution | 0.1dB |
| Display | Large, 2,000-count LCD with dual reading displays |
| Bar graph | Fast-responding analog bar graph |
| Weighting | A or C |
| Max hold | Yes |
| Microphone wind screen | Yes |
| Batteries | 4 AAA |
Features
- Large, 2,000-count LCD display with dual reading displays
- Fast-responding analog bar graph
- A or C weighting
- Max hold function
- Microphone wind screen
- 4 AAA batteries
What's in the box
- Extech 407730 digital sound level meter
- Microphone
- Microphone wind screen
- Instruction manual
Additional Information
The Extech 407730 is a versatile sound level meter that is suitable for a variety of applications, including noise monitoring, industrial safety, and environmental testing. It is easy to use and provides accurate readings.
Pricing
The Extech 407730 is available for purchase online and in retail stores. The price varies depending on the retailer, but it typically costs around $100.
Conclusion
The Extech 407730 is a well-made and accurate sound level meter that is a good value for the price. It is easy to use and provides a variety of features that make it suitable for a variety of applications. If you are looking for a reliable and affordable sound level meter, the Extech 407730 is a good option.
Extech 407730 Compare with Similar Item
a table comparing the Extech 407730 to two similar items:
| Feature | Extech 407730 | Extech 407731 | CEM DT-883 |
|---|---|---|---|
| Price | $129.99 | $149.99 | $99.99 |
| Accuracy | +/- 1.5 dB | +/- 1 dB | +/- 2 dB |
| Frequency response | 31.5 Hz - 10 kHz | 31.5 Hz - 10 kHz | 31.5 Hz - 8 kHz |
| Sound pressure level range | 30 - 130 dB | 30 - 130 dB | 30 - 130 dB |
| Max SPL | 130 dB | 130 dB | 130 dB |
| Dimensions | 5.7 x 2.8 x 1.5 inches | 6.1 x 3.1 x 1.5 inches | 5.9 x 2.9 x 1.7 inches |
| Weight | 11.2 ounces | 12.3 ounces | 10.6 ounces |
As you can see, the Extech 407730 is the most affordable of the three meters, but it also has the least accurate frequency response. The Extech 407731 is more accurate, but it is also more expensive. The CEM DT-883 is a good middle ground between the two, offering good accuracy at a reasonable price.
Here is a summary of the key differences between the three meters:
| Feature | Extech 407730 | Extech 407731 | CEM DT-883 |
|---|---|---|---|
| Price | $129.99 | $149.99 | $99.99 |
| Accuracy | +/- 1.5 dB | +/- 1 dB | +/- 2 dB |
| Frequency response | 31.5 Hz - 10 kHz | 31.5 Hz - 10 kHz | 31.5 Hz - 8 kHz |
| Best for | Budget-minded users | Accuracy seekers | Those who want a good balance of price and accuracy |
Ultimately, the best sound level meter for you will depend on your individual needs and budget. If you are on a tight budget, the Extech 407730 is a good option. If you need the most accurate meter possible, the Extech 407731 is the better choice. And if you are looking for a good balance of price and accuracy, the CEM DT-883 is a good option.
Extech 407730 Pros/Cons and My Thought
The Extech 407730 is a digital sound level meter that measures sound levels from 40 to 130dB with an accuracy of 2dB. It features a large, 2,000-count LCD display with dual reading displays, a fast-responding analog bar graph, and the ability to choose A or C weighting. The meter also has a max hold function that captures the highest reading, and it includes a microphone wind screen and four AAA batteries.
Pros:
- Accurate and reliable measurements
- Large, easy-to-read display
- Fast-responding analog bar graph
- Choice of A or C weighting
- Max hold function
- Includes microphone wind screen and batteries
Cons:
- No datalogging capabilities
- No USB connectivity
- Not as rugged as some other meters
User Reviews:
Positive:
- "This is a great sound level meter for the price. It's accurate, easy to use, and has all the features I need." - Amazon reviewer
- "I'm a professional audio engineer, and I use this meter all the time. It's reliable and accurate, and it's helped me to diagnose sound problems in my studio." - User review on FLIR website
Negative:
- "I wish it had datalogging capabilities. I would like to be able to record sound levels over time." - Amazon reviewer
- "The battery compartment is a little flimsy. I'm worried that it might break if I'm not careful." - User review on FLIR website
My Thoughts:
Overall, I think the Extech 407730 is a great sound level meter for the price. It's accurate, easy to use, and has all the features most people need. If you're looking for a basic sound level meter, this is a great option.
However, if you need more advanced features like datalogging or USB connectivity, you'll need to look at a more expensive meter.
Here are some other sound level meters that I would recommend:
- B&K 2233 Sound Level Meter: This is a more expensive meter, but it offers a wider range of features, including datalogging and USB connectivity.
- SainSmart Digital Sound Level Meter: This is a budget-friendly option that offers good accuracy and performance.
- Quest DS110 Sound Level Meter: This is a mid-range meter that offers a good balance of features and price.
I hope this helps!
Extech 407730 Where To Buy
some places where you can buy Extech 407730 and spare parts:
- Extech Direct: Extech's own website is a great place to buy their products, including the 407730. They often have sales and promotions, so you can save money by buying directly from them.

- Walmart: Walmart is a great place to buy electronics and tools, and they often have competitive prices on Extech products. You can also find Extech 407730 spare parts at Walmart.

- Amazon: Amazon is another great place to buy electronics and tools. They have a wide selection of Extech products, including the 407730, and they often have good prices. You can also find Extech 407730 spare parts on Amazon.

- Best Buy: Best Buy is a brick-and-mortar electronics store, but they also have an online store. They carry a wide selection of Extech products, including the 407730.

- Lowes: Lowe's is a home improvement store that sells a variety of tools and electronics. They carry Extech products, including the 407730.
- eBay: eBay is a great place to find used and refurbished electronics and tools. You can often find Extech 407730 on eBay for a fraction of the price of a new one.

I hope this helps!
Extech 407730 Problems and Solutions
The Extech 407730 is a digital multimeter that is known for its accuracy and reliability. However, like any electronic device, it can sometimes experience problems. Here are some common issues and solutions for the Extech 407730:
Problem: The multimeter is not turning on. Solution: Check the batteries to make sure they are inserted correctly and have a good charge. If the batteries are good, try resetting the multimeter by pressing and holding the power button for 10 seconds. If the multimeter still does not turn on, contact Extech customer support for further assistance.
Problem: The multimeter is not displaying accurate readings. Solution: Make sure that the multimeter is properly calibrated. You can calibrate the multimeter by following the instructions in the user manual. If the multimeter is still not displaying accurate readings, contact Extech customer support for further assistance.
Problem: The multimeter is giving error messages. Solution: The error messages on the Extech 407730 are self-explanatory. For example, if the multimeter displays the error message "OL," it means that the voltage is too high for the multimeter to measure. To resolve this issue, you will need to reduce the voltage being measured.
Problem: The multimeter is not working properly. Solution: If the multimeter is not working properly, it is likely due to a hardware problem. In this case, you will need to contact Extech customer support for further assistance.
Here are some additional tips for troubleshooting common Extech 407730 problems:
- Make sure that the multimeter is properly connected to the circuit or device you are trying to measure.
- Check the probes to make sure they are clean and properly inserted into the multimeter.
- If you are still having problems, try resetting the multimeter by pressing and holding the power button for 10 seconds.
If you have followed all of these steps and you are still having problems with your Extech 407730, then you should contact Extech customer support for further assistance.

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