Does this product have certified NIST

No, Extech does not offer NIST calibration on the EN300. Most products are available with NIST at an additional cost, but the EN300 is not available w/NIST.

What is the minimum wind speed that this anemometer can measure accurately? I'm currently looking for an anemometer that can measure wind speed <1 m/s

wind speed measurement for the 407113 CFM Anemometer is: MPH: 1.1 to 78.3 knots: 1.0 to 68 km/h: 1.8 to 126 AIRFLOW: CFM = FT3/MIN: 0 TO 999,900 CFM CMM= M3/MIN: 0 TO 999,900 CMM I hope this helps your decision to buy.

The equipment can be calibrated with 407722 ??? (Sound)

This meter can use the 407001 software via the PC interface to view the parameters in real-time on the PC. You cannot log all 5 parameters at the same time. You can use the 407022 to calibrate the sound level mode. I hope you find this information helpful.

Is the 9 volt battery replaceable? Does it have a tripod mount?

Yes the battery is replaceable however it is a 3V #2032. To my knowledge no tripod mount is available.

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Q: What is the minimum wind speed that this anemometer can measure accurately? I'm currently looking for an anemometer that can measure wind speed <1 m/s

wind speed measurement for the 407113 CFM Anemometer is: MPH: 1.1 to 78.3 knots: 1.0 to 68 km/h: 1.8 to 126 AIRFLOW: CFM = FT3/MIN: 0 TO 999,900 CFM CMM= M3/MIN: 0 TO 999,900 CMM I hope this helps your decision to buy.

Q: The equipment can be calibrated with 407722 ??? (Sound)

This meter can use the 407001 software via the PC interface to view the parameters in real-time on the PC. You cannot log all 5 parameters at the same time. You can use the 407022 to calibrate the sound level mode. I hope you find this information helpful.

Q: Is the 9 volt battery replaceable? Does it have a tripod mount?

Yes the battery is replaceable however it is a 3V #2032. To my knowledge no tripod mount is available.

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Description

🌟 Elevate your environmental insights—because precision is the new power.

SMART DATA MANAGEMENT - Lock readings with Data Hold and analyze environmental trends using Min/Max functions—perfect for compliance and troubleshooting.
CRYSTAL CLEAR LARGE LCD DISPLAY - See multiple readings simultaneously with an oversized screen designed for quick, one-handed operation—no more guesswork on site.
ALL IN ONE ENVIRONMENTAL MASTERY - Measure air velocity, light, humidity, temperature, and sound with one sleek device—streamline your workflow effortlessly.
PRO GRADE ACCURACY VERSATILITY - Precision sensors including a thin-film humidity sensor and IEC Class 2 sound meter ensure reliable data for critical decisions.
RUGGED PORTABILITY FOR FIELD PROS - Lightweight, durable, and battery-powered with tripod mount and RS-232 interface—ready to accompany you anywhere from labs to job sites.

The Extech EN300 is a compact, rugged 5-in-1 environmental meter that measures air velocity, light intensity, humidity, temperature, and sound level with professional-grade accuracy. Featuring a large dual LCD display, data hold, min/max tracking, and versatile connectivity options, it’s designed for field and indoor monitoring across HVAC, labs, classrooms, and job sites. Powered by six AAA batteries and built for portability, the EN300 delivers reliable, instant readings to optimize your environmental assessments.

Specifications

Brand	Extech
Item Weight	0.34 Kilograms
Battery Description	6 x AAA (1.5V) batteries
Lower Temperature Rating	32 Degrees Fahrenheit
Mounting Type	Freestanding
Upper Temperature Rating	1.3E+3 Degrees Celsius
Temperature Accuracy	1.2°C
Manufacturer	Extech
UPC	793950440308 013088123530
Global Trade Identification Number	00793950440308
Part Number	EN300
Item Weight	12 ounces
Product Dimensions	9.8 x 2.8 x 1.3 inches
Item model number	EN300
Batteries	6 AAA batteries required. (included)
Is Discontinued By Manufacturer	No
Style	EN300
Pattern	Precision Measuring
Item Package Quantity	1
Number Of Pieces	1
Measurement Accuracy	+/-0.5%
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Description Pile	6 x AAA (1.5V) batteries

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