The laser unit adds a much requested red sighting laser, and an expanded temperature range to 662F (or 350C). This unit has an adjustable emissivity setting for precise calibration, and perhaps best of all, a tight infrared "cone" distance to spot ratio (D:S) of 6:1. That means at a distance of 6 inches, you are reading an area just 1 inch in diameter. At a distance of 2 feet, an area of just 4 inches, as compared to our wider D:S ratio of 1:1 on the basic unit.
Includes a wrist strap and two batteries.