Dual Two Channel 2 K-Type Digital Thermometer Thermocouple Sensor 1300°C/2372°F

I'm leaving my original review below, because when I first got this two weeks ago, I liked it. A week of actual usage has changed my mind. It's not worth the powder to blow it up.1) Eats batteries. After about 30 minutes of usage, readings became wildly erratic and random. OK, it came with a cheapo-cheapo battery, so I put in a brand new high quality one, and thought that was the end of the story. Nope, in just over 30 minutes, it was erratic again. Another battery, another thirty minutes of usage. And on we go.2) Takes far too long to reach a stable temperature. It gets near temperature in just seconds, but leave it in place and it slowly keeps drifting for several minutes, until it finally holds still. I've checked reading with a couple of other instruments, and the final reading seems accurate, but this "wait five minutes" is not what I expected. The power saver doesn't last that long, it keeps turning itself off before it stabilizes. So you get about six good readings per 9 volt battery.Final verdict - piece of junk.Original review (was five stars):Not exactly a scientific instrument, but not bad for the money. The first thing I did was to clip the two probes together and measure ambient air. Half a degree difference between T1 and T2, a red flag. Switched where the probes plugged in and the difference stayed with the meter, it wasn't a probe issue. I didn't have a more accurate thermometer (or I wouldn't have bought this) so I went for the gold standards, boiling and freezing water. It nailed the freezing point of water dead on, both sides, and came within a degree F of boiling, which could have been my inability to hold the probes exactly at the top water level with my hands over a pot of boiling water. For the scientific types, I'm about 350 feet above sea level, not enough to make any real difference in boiling and freezing points.With the supplied probes (and I hope others) it gives a fast reading, just a few seconds for it to stabilize on temperature, at least at boiling and freezing.The max/min/average feature is of prime importance to me, as I'm going to be doing "wet bulb" readings, at which the minimum point in a gradual U shaped temperature curve is the only true "wet bulb" temperature, and easy to miss without something to record the minimum point for you.It's close enough for my purposes, actually better than I expected. With a small amount of "burn-in" the difference between the scales dropped to about .2 F, unsettling, but close enough for my needs. I'm going 5 stars because of the price point. Had this been a hundred dollar meter, I would have returned it for the inaccuracy between scales.

so first this is called a read out(where the information is displayed in characters we can understand. the two measuring temperature probe it comes with which is called a sensor probe or more commonly a thermocouple are junk they only go to some crazy low number, however how it is written it is implied that it comes with a probe that is capable of going to 2300. i have yet to check its accuracy because it didn't come with a battery

As good as i expected