Extech RHT20 Humidity and Temperature Datalogger - 16,000 Reading Memory, Dew Point, Time/Date Stamp, USB Data Download, Compact Indoor Air Quality Monitor

★★★★★ 4.5 106 reviews

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Management number 229117812 Release Date 2026/05/31 List Price $73.60 Model Number 229117812
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Product Description Humidity temperature datalogger records up to 16,000 humidity and 16,000 temperature readings with a user programmable sample rate. USB interface for easy setup and data download. Selectable data sampling rates of 2s, 5s, 10s, 30s, 1 m, 5 m, 10 m, 30 m, 1hr, 2hr, 3hr, 6hr, 12hr, and 24hr. User-programmable alarm thresholds for RH and temperature. LCD displays current temperature and humidity readings plus min/max and alarm status. Long battery life. Place or mount the datalogger in monitoring location (storage bin, truck, cargo hold, freezer, temperature-controlled room, etc.). Datalogger records temperature and humidity at sample rate set by the user. Connect the datalogger to your PC via the USB interface to retrieve readings. Datalogger displays the current Humidity and Temperature plus Min/Max and alarm status so it can be viewed anytime during the recording process. Complete with battery, mounting bracket, and software. From the Manufacturer The Extech RHT20 Humidity And Temperature Datalogger includes the USB interface for an easy setup and easy data downloading. It has selectable data sampling rates from 1 second to 24 hours. This datalogger has user programmable alarm thresholds for Rh and temperature. The LCD screen displays the current readings, min/max and alarm status. Also, this datalogger includes the Windows 2000, XP and Vista compatible analysis software. The Extech RHT20 Humidity And Temperature Datalogger comes complete with a 3.6V lithium battery, a mounting cracket and a combination lock. Incorporated in 1970, Extech Instruments is based in Waltham, Massachusetts USA, just west of Boston. Recognized for the breadth and depth of its Test & Measurement offering and strong distribution network, Extech was acquired by FLIR Systems in November 2007. Extech Instruments’ high-value, handheld test instruments and FLIR-branded infrared thermal imager are sold through a network of national catalog houses, regional stocking distributors, internet, and international master distributors. The company has become one of the largest manufacturers and suppliers of test equipment and portable printers and the Extech Instruments brand is regarded in many industries as the brand of choice. ISO 9001:2000 certified by TUV, Extech’s enviable reputation is built on innovative products that offer unique and patented designs with features, functions and reliability at an affordable price.

  • Accurate Humidity & Temperature Monitoring - Measures relative humidity from 0-100% and temperature from -40 to 158 °F (-40 to 70 °C) for versatile indoor applications.
  • Large 16,000-Point Memory Capacity - Stores 8,000 humidity and 8,000 temperature readings with time and date stamp for reliable long-term tracking.
  • USB Data Transfer to PC - Easily connects to a computer for data download, analysis, and reporting using included software.
  • Calculates Dew Point Automatically - Provides precise dew point values along with humidity and temperature readings for comprehensive air quality insight.
  • Compact & Portable Design - Lightweight and battery-powered, ideal for HVAC technicians, labs, greenhouses, storage areas, and environmental monitoring.
UPC 785533796544 793950440209
ASIN B0029VA4DG
Color RHT20
Model RHT20
Voltage 3.6 Volts
Brand Name Extech
Unit Count 1.0 Count
Item Weight 0.1 Kilograms
Part Number RHT20
Manufacturer Extech
Mounting Type Tabletop
Operating Humidity 0% to 100% RH
Included Components RHT20
Temperature Accuracy 2
Warranty Description Full one year warranty on parts and workmanship, unless otherwise specified. This warranty does not apply to defects resulting from action of the user such as misuse, improper wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification.
Upper Temperature Range 70 Degrees Celsius
Smart Home Compatibility Not Smart Home Compatible
Global Trade Identification Number 00793950440209

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