Klein Tools ET130 Light Meter Review: A Practical Way to Measure Light

Introduction

Putting an actual number on how bright a room feels is more useful than it sounds. The Klein Tools ET130 light meter does exactly that, reading light levels in both foot candles and lux so you can compare real measurements against recommended values for kitchens, offices, workshops, and more.

Who This Product Is For

Anyone who installs or swaps lighting benefits from having measurements instead of guesses. There are established values for how much light should be present in different locations, whether that is a kitchen, bathroom, bedroom, studio, workshop, office, or garage. The meter is also handy for checking interior light levels in RVs, dome lights in vehicles, spotlights, or headlights, especially after LED conversions that can turn a dim environment into something blindingly bright.

Main Strengths

The ET130 covers a range of 0 to 4,000 foot candles and 0 to 40,000 lux. It includes data hold and min/max values, which matters if you need to operate a light from a distance from the sensor, such as cycling a switch on and off while watching the reading. A backlight bar graph and LCD make the results easy to interpret at a glance.

The sensor supports both auto range and manual range modes. In auto mode the meter selects the appropriate scale on its own; in manual mode you can cycle through 400, 4k, and 40k settings, and an overload indicator tells you when you have exceeded the selected range. Foot candles is the default on power-up, and the meter includes a quarter-20 tripod mount on the back so you can leave it set up in a fixed position.

Things to Consider Before Buying

The build is solid standard plastic with a rubberized material for better grip, and the meter is claimed to survive a one meter drop. There is no lanyard hole, which some users may miss, though the tripod mount partly compensates. The meter comes with a typical Klein carrying case.

It is also worth understanding what the reading means. Lux is similar to lumens, but not identical. Lumens measure the absolute output, the total light a device produces, and capturing that properly requires an integrating sphere setup. Lux gives you directional illumination at the sensor instead. The number will be off compared with a proper lumen capture, but it will be off by a similar proportion across measurements, so relative comparisons between rooms, bulbs, and fixtures remain meaningful.

Buying Advice

Priced between roughly 60 and 70 dollars, the ET130 sits in accessible territory for a tool that pays for itself in avoided guesswork. Before and after readings let you see how a bulb swap or new fixture actually performs, whether diffusion is cutting out too much light, or whether a space that feels dim really is. Klein makes a growing range of utility and workshop sensors, and this meter fits neatly into that ecosystem if you prefer dedicated instruments over computer or laboratory equipment.

Conclusion

The Klein Tools ET130 is a well-built, straightforward light meter for anyone who wants real numbers behind their lighting decisions. With dual foot candle and lux readings, auto and manual ranging, data hold, min/max capture, and a tripod mount, it turns subjective brightness into something you can compare, track, and improve.