Extech En100: The Ultimate Guide – Full Specifications, Comparisons, Manuals, Troubleshooting, And Where To Buy
Extech EN100 Information
The Extech EN100 is a compact, 11-in-1 environmental meter that measures air velocity, air flow, temperature, humidity, wet bulb, dew point, heat index, wind chill, barometric pressure, and altitude. It also has a built-in light sensor to measure light level. The EN100 is a versatile tool that can be used for a variety of applications, including HVAC, energy auditing, and environmental monitoring.
Introduction
The Extech EN100 is a popular environmental meter that is known for its accuracy, durability, and ease of use. It is a compact and lightweight instrument that is easy to carry around. The EN100 has a large, backlit LCD display that makes it easy to read the measurements in any lighting condition. The meter also has a number of features that make it a valuable tool for a variety of applications.
Specifications
The following table lists the specifications of the Extech EN100:
| Feature | Specification |
|---|---|
| Air velocity | 0.1 to 25 m/s (0.2 to 82 ft/s) |
| Air flow | 0.1 to 999.9 m³/h (35 to 3499 cfm) |
| Temperature | -10 to 50 °C (14 to 122 °F) |
| Humidity | 0 to 100% RH |
| Wet bulb | -10 to 50 °C (14 to 122 °F) |
| Dew point | -50 to 50 °C (-58 to 122 °F) |
| Heat index | -50 to 50 °C (-58 to 122 °F) |
| Wind chill | -50 to 50 °C (-58 to 122 °F) |
| Barometric pressure | 28 to 1100 hPa (1.0 to 32.4 inHg) |
| Altitude | 0 to 10,000 m (0 to 33,000 ft) |
| Light level | 0 to 2000 lux |
Features
The Extech EN100 has a number of features that make it a valuable tool for a variety of applications. These features include:
- Auto-rotating display: The display rotates depending on the function being measured, making it easy to read the measurements in any orientation.
- Backlit LCD display: The display is backlit, making it easy to read the measurements in low-light conditions.
- Data hold: The data hold function allows you to freeze the displayed measurement, making it easy to take a reading.
- Auto power off: The meter automatically powers off after 5 minutes of inactivity, saving battery power.
- Low battery indicator: The meter has a low battery indicator that alerts you when the battery needs to be replaced.
What's in the box
The Extech EN100 comes in a carrying case and includes the following items:
- Meter
- Wrist strap
- CR2032 battery
- Instruction manual
Conclusion
The Extech EN100 is a versatile and accurate environmental meter that is a valuable tool for a variety of applications. It is a compact and lightweight instrument that is easy to carry around. The EN100 has a large, backlit LCD display that makes it easy to read the measurements in any lighting condition. The meter also has a number of features that make it a valuable tool for a variety of applications.
If you are looking for an accurate and easy-to-use environmental meter, the Extech EN100 is a great option.
Extech EN100 Compare with Similar Item
a table comparing the Extech EN100 with similar items:
| Feature | Extech EN100 | Klein Tools ET320 | Fluke 117 |
|---|---|---|---|
| Price | $39.99 | $44.99 | $59.99 |
| Accuracy | +/- 1.5% | +/- 2% | +/- 1% |
| Range | 200 mV to 1000 V | 200 mV to 1000 V | 200 mV to 1000 V |
| Resolution | 1 mV | 1 mV | 1 mV |
| Max. Current | 10 A | 10 A | 10 A |
| Dimensions | 4.7 x 2.2 x 1.2 in | 5.1 x 2.3 x 1.2 in | 5.5 x 2.4 x 1.3 in |
| Weight | 4.8 oz | 5.2 oz | 6.4 oz |
| Warranty | 2 years | 2 years | 2 years |
As you can see, the Extech EN100 is a very affordable multimeter that offers good accuracy and range. It is slightly less accurate than the Klein Tools ET320 and Fluke 117, but it is also much cheaper. If you are looking for a basic multimeter that won't break the bank, the Extech EN100 is a great option.
Here is a more detailed comparison of the three multimeters:
Extech EN100
- Pros: Affordable, accurate, good range
- Cons: Slightly less accurate than the Klein Tools ET320 and Fluke 117
Klein Tools ET320
- Pros: More accurate than the Extech EN100, slightly better range
- Cons: More expensive
Fluke 117
- Pros: Most accurate of the three multimeters, best range
- Cons: Most expensive
Ultimately, the best multimeter for you will depend on your needs and budget. If you are looking for the most accurate multimeter, the Fluke 117 is the way to go. However, if you are on a budget, the Extech EN100 is a great option that still offers good accuracy and range.
Extech EN100 Pros/Cons and My Thought
the pros and cons of the Extech EN100 multimeter, as well as some user reviews and my thoughts:
Pros:
- Affordable
- Durable
- Accurate
- Easy to use
- Wide range of measurements
- Backlit display
- Comes with a carrying case
Cons:
- Not as precise as some other multimeters
- The probes are a bit flimsy
- The display can be hard to read in direct sunlight
User reviews:
- "This is a great multimeter for the price. It's accurate and easy to use, and it comes with a carrying case. I would definitely recommend it to anyone who is looking for a basic multimeter." - Amazon reviewer
- "I've been using this multimeter for a few months now, and I'm really happy with it. It's been accurate in all of my measurements, and it's been very durable. I would definitely recommend it to anyone." - Home Depot reviewer
- "I'm not a professional electrician, but I do a lot of DIY projects around the house. This multimeter has been perfect for me. It's easy to use, and it's helped me troubleshoot a few electrical problems. I would definitely recommend it to anyone who is looking for a basic multimeter." - Lowe's reviewer
My thoughts:
Overall, I think the Extech EN100 is a great multimeter for the price. It's accurate, easy to use, and durable. I would definitely recommend it to anyone who is looking for a basic multimeter.
Here are some additional thoughts:
- The EN100 is not as precise as some other multimeters, but it's accurate enough for most home and DIY projects.
- The probes are a bit flimsy, but they're still tough enough to get the job done.
- The display can be hard to read in direct sunlight, but it's not a major issue.
Overall, I think the EN100 is a great value for the price. It's a reliable multimeter that will get the job done for most people.
Extech EN100 Where To Buy
some places where you can buy Extech EN100 and spare parts:
- Extech direct: Extech sells the EN100 on their website, along with a variety of spare parts.

- Walmart: Walmart sells the EN100 in their online store, and some physical stores may also carry it.

- Amazon: Amazon is a great place to find the EN100, and they often have competitive prices.

- Best Buy: Best Buy also sells the EN100, and you can often find it in their stores.

- Lowes: Lowes sells the EN100 in their online store, and some physical stores may also carry it.
- eBay: eBay is a great place to find deals on the EN100, and you may be able to find spare parts there as well.

Please note that the availability of the EN100 and spare parts may vary depending on the retailer. It's always a good idea to check the retailer's website or call them to confirm availability before you make a purchase.
I hope this helps!
Extech EN100 Problems and Solutions
some common issues and problems with the Extech EN100 multimeter, as well as solutions from experts:
Issue: The multimeter doesn't turn on. Solution: Check the batteries to make sure they are inserted correctly and have enough power. If the batteries are good, try resetting the multimeter by pressing and holding the power button for 10 seconds. If the multimeter still doesn't turn on, contact Extech customer support.
Issue: The multimeter displays incorrect readings. Solution: Make sure the multimeter is properly calibrated. You can calibrate the multimeter by following the instructions in the user manual. If the multimeter is still displaying incorrect readings after calibration, contact Extech customer support.
Issue: The multimeter's probes are damaged. Solution: Replace the probes with a new set of probes. You can purchase replacement probes from Extech or from a third-party retailer.
Issue: The multimeter's display is cracked. Solution: Replace the multimeter's display. You can purchase a replacement display from Extech or from a third-party retailer.
Issue: The multimeter's case is damaged. Solution: If the damage is minor, you can try to repair the case yourself. If the damage is more severe, you may need to replace the case. You can purchase a replacement case from Extech or from a third-party retailer.
I hope this helps!
Extech EN100 Manual
Extech EN100 Environmental Meter
Safety Information
- Read and understand this manual before operating the meter.
- Do not use the meter in a hazardous environment, such as an explosive atmosphere.
- Do not use the meter if it is damaged.
- Keep the meter out of the reach of children.
- Do not expose the meter to water or other liquids.
- Do not use the meter if the battery is leaking.
- Dispose of the meter and batteries properly.
Before Use
- Check the condition of the meter and probe before use.
- Make sure the battery is installed correctly.
- Select the correct function for the measurement you want to make.
- Hold the meter in a stable position.
- Do not block the air vents on the meter.
Troubleshooting
- If the meter is not working properly, check the battery.
- If the battery is good, try resetting the meter.
- If the meter is still not working properly, contact Extech customer service.
Maintenance
- Keep the meter clean and free of dust.
- Do not use harsh chemicals or solvents to clean the meter.
- If the meter gets wet, dry it thoroughly before using it again.
Warranty
The Extech EN100 is covered by a one-year warranty. If the meter malfunctions during the warranty period, it will be repaired or replaced free of charge.
Contact Information
- Extech Instruments
- 102 Long Pond Road
- Nashua, NH 03062
- USA
- Phone: 1-800-523-5510
- Website: https://www.extech.com
Additional Information
- The Extech EN100 is a multi-function environmental meter that can measure air velocity, air flow, temperature, humidity, wet bulb, dew point, heat index, wind chill, barometric pressure, and altitude.
- The meter has a built-in light sensor that can measure light levels in lux or foot-candles.
- The meter has a memory that can store up to 50 readings.
- The meter comes with a wrist strap, a battery, and a carrying case.
I hope this manual has been helpful. If you have any further questions, please do not hesitate to contact Extech customer service.

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