Description
Product Overview
The Extech EN300 is a versatile 5‑in‑1 environmental meter designed for professionals who need reliable, multi‑parameter data in a single handheld device. Built with a robust ABS housing and a 9.8 x 2.8 x 1.3‑inch form factor, the meter weighs just 0.34 kg, making it easy to carry in a toolbox or backpack. Its large, backlit LCD displays up to five parameters simultaneously—air velocity, light intensity, relative humidity, temperature, and sound level—allowing users to monitor complex environments without juggling multiple instruments. The device operates on six AAA alkaline batteries, which are included, providing up to 20 hours of continuous use. Temperature measurement ranges from 32 °F to 1300 °C with an accuracy of ±1.2 °C, while humidity accuracy is within ±5 % RH. Air velocity is measured from 0.1 m/s to 30 m/s with a ±0.5 % accuracy, and sound level ranges from 30 dB to 130 dB. The EN300 also features data‑hold, min/max, and max/min functions, enabling users to lock readings, capture peak values, and track trends over time. All specifications are calibrated to meet industry standards, ensuring that the data you collect is both precise and repeatable.
![[Product front view showing all components]](https://www.olnix.store/wp-content/uploads/2026/07/19344a00552d4a1e8f2787bed0966a43.jpg)
Usage
Designed for a wide range of applications, the EN300 excels in HVAC system commissioning, indoor air quality assessments, laboratory environmental monitoring, and occupational health and safety audits. HVAC technicians can quickly verify airflow rates across ducts, balance ventilation systems, and confirm that temperature set points are within design tolerances. Facility managers can use the meter to assess lighting levels in workspaces, ensuring compliance with ergonomic standards, while also monitoring humidity to prevent mold growth in storage areas. In educational settings, the EN300 provides a hands‑on learning tool for students studying physics, environmental science, or engineering, allowing them to record real‑time data on sound levels in classrooms or labs. Its rugged design and battery‑powered operation make it ideal for field surveys, such as outdoor noise mapping, construction site ventilation checks, and environmental impact studies. The intuitive one‑hand controls mean that users can take measurements while keeping the other hand free for tools or safety equipment.
Why Choose Us
Choosing the Extech EN300 means investing in a product backed by a two‑year limited warranty and a reputation for durability. Extech, a leader in measurement technology, has engineered the EN300 with a focus on accuracy, ease of use, and long‑term reliability. The meter’s calibration is performed at the factory and can be verified with Extech’s optional calibration kits, giving users confidence in the data integrity for regulatory compliance and quality control. Customer support includes a dedicated technical helpline, online resources, and downloadable user manuals that cover troubleshooting, firmware updates, and best‑practice measurement techniques. Additionally, the EN300’s data‑hold and min/max features reduce the need for external data loggers, streamlining workflow and lowering overall project costs. The device’s compact size does not compromise on performance; it meets or exceeds the specifications of many larger, more expensive instruments, delivering professional‑grade results at a competitive price point.
Key Features
- Five‑in‑one measurement capability saves space and reduces tool count for professionals.
- Large backlit LCD displays multiple parameters clearly, even in bright environments.
- Data‑hold and min/max functions enable quick capture of peak values and trend analysis.
- Battery‑operated design provides up to 20 hours of field use without recharging.
- Comes with a two‑year warranty and responsive after‑sales support for peace of mind.
FAQ
What types of batteries does the EN300 use and are they included?
The EN300 runs on six standard AAA alkaline batteries, which are included in the package. These batteries are widely available and provide reliable power for up to 20 hours of continuous operation, making the meter ready for immediate field use.
Can the EN300 be used for outdoor environmental surveys?
Yes. The EN300 is designed for both indoor and outdoor applications. Its robust ABS housing protects the internal electronics from dust and moisture, and the large LCD remains readable in direct sunlight. Users can safely measure air velocity, temperature, humidity, light, and sound levels on construction sites, outdoor labs, or during environmental impact assessments.
How accurate are the temperature and humidity readings?
Temperature measurements are accurate to ±1.2 °C across a range of 32 °F to 1300 °C, while humidity readings are accurate within ±5 % RH. These specifications meet the requirements of most HVAC, laboratory, and occupational health standards, ensuring trustworthy data for compliance reporting.
Is the EN300 compatible with data logging software?
While the EN300 does not have built‑in data logging, its data‑hold and min/max functions allow users to manually record values. For automated logging, Extech offers optional accessories and software that can interface with the meter via a USB or Bluetooth connection, enabling seamless integration into larger data‑management workflows.
What warranty and support does Extech provide?
Extech offers a two‑year limited warranty covering manufacturing defects. In addition, customers have access to a dedicated technical support line, online knowledge base, and downloadable manuals. Extech’s commitment to service ensures that any issues are resolved quickly, minimizing downtime for professionals.




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