Lutron MHB-372 – Multifunction Environmental Meter

Lutron MHB-372 – Multifunction Environmental Meter with Real-Time Data Logging

The Lutron MHB-372 is a compact and professional-grade multifunction meter designed for precise measurement of humidity, temperature, and barometric pressure. With integrated real-time data logging, high-resolution sensors, and seamless RS232/USB connectivity, this instrument is ideal for professionals, researchers, and individuals who need reliable environmental monitoring.

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Key Features Lutron MHB-372 – Multifunction Environmental Meter 

• Three-in-One Measurement Functionality

  • Simultaneously measures humidity, temperature, and barometric pressure for comprehensive environmental insight.

• Real-Time Data Logger

  • Automatically records data to an SD card with time and date stamps.

  • Data can be opened directly in Excel—no special software required.

• High Accuracy and Resolution

  • Humidity resolution: 0.1% RH

  • Temperature resolution: 0.1°C

  • Barometric pressure resolution: 0.1 hPa

  • Ensures precise data even in sensitive applications.

• User-Friendly Interface

  • Large, clear LCD display (60 × 50 mm) shows all three parameters simultaneously.

  • Intuitive button controls for ease of use in field or lab settings.

• Advanced Connectivity Options

  • Supports both USB and RS232 interfaces for easy connection to computers and data management systems.

• Microprocessor-Based Circuit Design

  • Ensures reliable, stable readings and long-term performance.

• Flexible Data Logging Options

  • Automatic logging with selectable intervals (5/10/30/60/120/300/600 seconds).

  • Manual data logging with a single button press.

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Ideal Users and Applications

• HVAC Professionals

  • Engineers and technicians optimizing indoor air quality and climate systems.

• Laboratories & Industry

  • Researchers and QA/QC teams requiring consistent environmental control.

• Agriculture and Warehousing

  • Farmers and warehouse managers maintaining storage conditions for sensitive goods.

• Hobbyists and Environmental Enthusiasts

  • Users monitoring home or small-scale environments with scientific accuracy.

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Measurement Specifications

• Humidity Measurement

  • Range: 10% to 90% RH

  • Resolution: 0.1% RH

  • Accuracy:

    • <70% RH: ±4% RH

    • ≥70% RH: ±(4% of reading + 1% RH)

• Temperature Measurement

  • Range: 0 to 50℃ (32 to 122℉)

  • Resolution: 0.1℃

  • Accuracy: ±0.8℃ (±1.5℉)

• Barometric Pressure Measurement

  • Ranges:

    • hPa: 300.0 to 1100.0

    • mmHg: 225.0 to 825.0

    • inHg: 8.85 to 32.48

  • Resolutions:

    • hPa: 0.1 hPa

    • mmHg: 0.1 mmHg

    • inHg: 0.01 inHg

  • Accuracy:

    • hPa: ±3 (300–750), ±2 (750.1–1100.0)

    • mmHg: ±2.0 mmHg

    • inHg: ±0.2 inHg

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Power and Data Storage

• Data Logging Options

  • Auto mode: Selectable intervals from 5 to 600 seconds

  • Manual mode: One-click data save

• SD Card Support

  • Compatible with SD cards from 1 GB to 16 GB

• Power Supply

  • 6 × 1.5V AAA batteries or optional DC 9V adapter

  • Energy-efficient, low power consumption

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Device Specifications

• Operating Environment

  • Temperature: 0 to 50℃

  • Humidity: <90% RH

• Dimensions and Weight

  • Size: 132 × 80 × 32 mm (5.2 × 3.1 × 1.3 inches)

  • Weight: 285 g (0.63 lb)

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Included Accessories

• Instruction Manual – 1 PC

• Hanging Unit with Sticker – 1 PC

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Optional Accessories

• SD Card

• AC to DC 9V Adapter

• USB Cable (Model: USB-01)

• RS232 Cable (Model: UPCB-02)

• Data Acquisition Software (SW-U801-WIN)

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Summary

The Lutron MHB-372 is a versatile and accurate environmental meter built for professionals who require reliable monitoring of humidity, temperature, and barometric pressure. Its combination of real-time data logging, USB/RS232 connectivity, and high-accuracy sensors makes it an essential tool for HVAC engineers, laboratories, industrial sites, agriculture, and climate-sensitive storage. With easy-to-use features and precise results, it delivers smart environmental solutions in the palm of your hand.