The PE-2 unit adds a much requested red sighting laser, and an expanded temperature range to 662F (easily switchable to 350C). The PE-2 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 3 inches.
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