Extech 42275 Temperature & Humidity Datalogger Kit

Extech 42275 Temperature & Humidity Datalogger Kit


The Extech Datalogger Kit is a compact system that easily records temperature and relative humidity.


  • Records up to 16,000 readings
  • Logs data for days, weeks or months
  • Multiple dataloggers can be programmed and data downloaded from one single docking station
Your Price
Drop ships from manufacturer

Shipping Information
Return Policy
Why Buy From Fondriest?


The Extech Temperature & Humidity Datalogger Kit is a compact system that that logs data for days, weeks, or months.The meter collects humidity readings from 0 to 100% RH and temperature from -40 to 185 ̊F (-40 to 85 ̊C).  It can log up to 16,000 readings (8,000 each temperature & humidity) all in a waterproof housing. Multiple dataloggers can be programmed and data downloaded from one single docking station.The dock easily connects to a PC via the included RS-232 cable (or optional USB cable) and data can be further analyzed with the included Windows compatible software.


Programable sampling rates can be set from 1 second to 2 hours and high/low limits with alarm indication. The logger can be programmed and data stored and analyzed using the software. Three start methods are conviniently available: scheduled, immediate, or magnetic. The real time clock stores date and time with the data.

Notable Specifications:
  • Temperature range: -40°F to 185°F, 40°C to 85°C
  • Temprature resolution: 0.1°
  • Basic accuracy: ±1°F(-4 to 122°F), ±2°F (-40 to -4°F, 122 to 185°F), ±0.6°C (-20 to 50°C), ±1.2°C (-40 to 20°C, 51 to 85°C)
  • Humidity range: 0 to 100%RH
  • Humidity resolution: 0.1%
  • Humidity basic accuracy: ±3%RH
  • Datalogging interval: 1 second to 2 hours
  • Memory: temperature, 8000 points; relative humidity, 8000 points
  • Dimensions: 4.9 x 3.8 x 2" (123.8 x 95.3 x 51mm)
  • Weight: 9oz (254g)
What's Included:
  • (1) Datalogger
  • (1) RS-232 docking station & cable
  • (1) Windows compatible software
Image Part # Product Description Price Stock Order
Extech 42275 Temperature & Humidity Datalogger Kit 42275 Temperature & humidity datalogger kit with PC interface
Drop ships from manufacturer
Image Part # Product Description Price Stock Order
Extech 42270 Temp/Humidity Data Logger for 42275 42270 Temperature & humidity data logger for 42275
Drop ships from manufacturer
Extech 42299 Replacement 3.6 V Lithium Batteries 42299 Replacement 3.6 V lithium batteries, 2-pack
In Stock
Extech USB100 RS-232 to USB Adapter USB100 RS-232 to USB adapter
Drop ships from manufacturer

Extech 42275 Temperature & Humidity Datalogger Kit Reviews

| Write a Review

Be the first to write a review

Related Products

In The News

First Environmental Monitoring System For Baltimore’s Inner Harbor

Baltimore’s Inner Harbor and the rivers that flow into it are important sources of water to Chesapeake Bay, popular recreation sites and the targets of an ambitious clean-up plan. But the city has for some time lacked an environmental monitoring system for tracking water quality in the harbor continuously. That is about to change, thanks to a collaboration between the U.S. Geological Survey (USGS) and Environmental Protection Agency (EPA). It will lead to the new installation of a suite of sensors that will provide the public and scientists with the first comprehensive, real time look at water quality in the harbor.

Read More

Parasite Behind Yellowstone River Fish Kill Found In Other Rivers

A parasite that caused a massive fish kill in Montana’s Yellowstone River has been found in at least seven other rivers in the state, according to the Bozeman Daily Chronicle . Scientists with the Montana Fish, Wildlife and Parks department made the find. So far, the parasite has been confirmed in the upper and lower Madison, East Gallatin, Bighorn, Stillwater, and Boulder Rivers. It had already been confirmed in the Jefferson and Shields Rivers. The microscopic parasite causes proliferative kidney disease, one of the most serious diseases to impact whitefish and trout. The effect of the disease on Yellowstone’s fish populations is exacerbated by other stressors like near-record low flows, consistent high temperatures and the disturbance caused by recreational activities.

Read More

ESPniagara Tracks Algal Toxins In Lake Erie, Protects Drinking Water

It may have taken 20 years and $20 million to develop, but Lake Erie researchers working to fight harmful algal blooms (HABs) now have a new tool to safeguard drinking water: ESPniagara. The advanced sampler has been called a “lab in a can” for its ability to sample microcystins, the most common algal toxin these days, in almost real time. The big gadget’s name is a mashup between “ESP,” for environmental sample processor, and the name of Admiral Oliver Hazard Perry’s ship during the War of 1812. “We wanted to name it something that was significant to Lake Erie,” said Tim Davis, molecular biologist and lead HABs researcher at the National Oceanic and Atmospheric Administration’s Great Lakes Environmental Research Lab (NOAA GLERL) in Ann Arbor, Mich.

Read More