

Extech 42280A Temperature and Humidity Data Logger
The Extech 42280A is a versatile temperature and humidity datalogger designed for monitoring environmental conditions in various settings such as laboratories, cleanrooms, hospitals, and indoor work environments. It offers real-time data display, extensive data logging capabilities, and comprehensive reporting features, making it an ideal tool for ensuring optimal storage conditions and occupant comfort.
Description
The Extech 42280A features a large, easy-to-read LCD screen that simultaneously displays temperature, humidity, date, and time. It records up to 24,000 data sets with time/date stamps and offers programmable high/low limits for both temperature and humidity. Audible and visible alarms alert users when conditions exceed set thresholds. Data can be exported to a PC via USB for generating PDF reports with trending graphs or spreadsheets compatible with Microsoft Excel. The device also includes password protection for data security and supports field calibration using optional calibration bottles.
Features
- Simultaneous Display: Shows temperature, humidity, date, and time on a large LCD screen.
- Data Logging Capacity: Stores up to 24,000 data sets with time/date stamps.
- Programmable Alarms: Set high/low limits for temperature and humidity with audible and visible alerts.
- Data Export: Generate PDF reports or export data to Microsoft Excel via USB connection.
- Password Protection: Ensures data security with user-defined passwords.
- Field Calibration: Supports calibration using optional 33% RH and 75% RH calibration bottles.
- Mounting Options: Can be wall-mounted, placed on a desktop, or mounted on a tripod.
- Dew Point Measurement: Calculates dew point within the range of 0°C to 50°C (32°F to 122°F).
- Sample Rate Options: Configurable sampling rates from 30 seconds to 120 minutes.
- Compact Design: Lightweight and portable for flexible placement and use.
Includes
- 42280A Temperature and Humidity Datalogger

