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TLDR Review: SEJOY Infrared Forehead Thermometer DET-306

By ShopSavvy Team

Published: June 14th, 2025

Last Updated: July 18th, 2025

Pros

•Accurate readings comparable to ear thermometers.
•Quick temperature measurement within about 30 seconds.
•Easy to use; simply hold it against the forehead above the eyebrows.
•Can store up to 10 memory readings for tracking temperatures.
•Suitable for both children and adults.
•Simple and aesthetically pleasing design.

Cons

•Screen can be difficult to interpret.
•Sometimes requires two clicks to power on.
•Not recommended for storing past readings.
•Temperature readings are consistently 2 degrees or more lower than the actual temperature.
•High cost is not justified by performance.
•Frequently displays a low reading error (Er1).
•Error messages are often displayed.
•Directions for use are confusing and seem incomplete.
•Consistently reads an incorrect temperature which is likely inaccurate.

Bottom Line

The SEJOY Infrared Forehead Thermometer DET-306 offers the convenience of fast temperature readings and memory storage for tracking, but its accuracy leaves much to be desired. Users have noted consistent deviations in the temperature readings, making it unsuitable for those requiring precise measurements. Given the high cost and the performance issues, you might want to consider a different brand for better accuracy and reliability.

Lowest at any Popular Retailer

$8.24 at Amazon

How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 60 retailers to give you the short version.