Extech SDL400 Light Meter/Datalogger

Extech SDL400 Light Meter/Datalogger


The Extech Light Meter/Datalogger records data on an SD card for easy transfer to a PC.


  • Wide range to 10,000Fc or 100kLux
  • Stores 99 readings manually and 20M readings via 2G SD card
  • Offset adjustment used for zero function to make relative measurements
Free Shipping on this product
Your Price
Drop ships from manufacturer

Shipping Information
Return Policy
Why Buy From Fondriest?


The Extech Light Meter/Datalogger has a wide range to 10,000Fc or 100kLux and cosine and color-corrected measurements. The meter utilizes precision silicon photo diode and spectral response filter. The datalogger date/time stamps and stores readings on an SD card for easy transfer to a PC. The offset adjustment is used for zero function to make relative measurements.


The datalogger stores up to 99 readings manually and 20M readings via the 2G SD card, and adjustable data sampling rates range from 1 to 3600 seconds. The type K/J thermocouple input is used for high temperature measurements. Additonal meter features include record/recall min and max readings, data hold, and automatic power off with disable function.

Notable Specifications:
  • Fc range: 200, 2000, 10kFc
  • Fc range resolution: 0.1Fc
  • Fc range basic accuracy: ±4%rdg
  • Lux range: 2000, 20k, 100kLux
  • Lux range resolution: 1Lux
  • Lux range basic accuracy: ±4%rdg
  • Type K temperature range: -148 to 2372°F (-100 to 1300°C)
  • Type K temperature resolution: 0.1°
  • Type K temperature basic accuracy: ±(0.4% + 1.8°F/1°C)
  • Type J temperature range: -148 to 2192°F (-100 to 1200°C)
  • Type J temperature resolution: 0.1°
  • Type J temperature basic resolution: ±(0.4% + 1.8°F/1°C)
  • Memory: 20M data records using 2G SD card
  • Dimensions: 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm)
  • Weight: 16.2oz (475g)
What's Included:
  • (1) Datalogger
  • (6) AA batteries
  • (1) SD card
  • (1) Hard carrying case
  • (1) Light sensor with protective cover
Image Part # Product Description Price Stock Order
Extech SDL400 Light Meter/Datalogger SDL400 Light meter/datalogger
Drop ships from manufacturer
Extech SDL400 Light Meter/Datalogger SDL400-NIST Light meter/datalogger, NIST traceable
Drop ships from manufacturer
Image Part # Product Description Price Stock Order
Extech Bead Wire Type J Temperature Probe 872502 Bead wire type J temperature probe
Drop ships from manufacturer
Extech TP870 Bead Wire Type K Temperature Probe TP870 Bead wire Type K temperature probe with mini connector
Drop ships from manufacturer
Extech TP200 Type K Clamp Temperature Probe TP200 Type K pipe clamp temperature probe
Drop ships from manufacturer
Extech TP400 High Temperature Type K Pipe Clamp TP400 High temperature Type K pipe clamp with 36" cable
Drop ships from manufacturer
Extech 153117 117V AC Adapter 153117 117V AC adapter
In Stock

Extech SDL400 Light Meter/Datalogger 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