I've used this thermometer three or four times a week to test food temperatures and to check on the oil temperature in my deep fat fryer. I've checked it against known temperatures (room and boiling) and it seems very reliable. Its temperature range is -50C to 300C (can be reset to F), with memory of the last reading, and a battery auto-shutdown after 10 mins.
I'd only relied on bi-metallic meat thermometers before, and was impressed by the much faster reaction speed of this digital one. Even better for meat temperatures, the shaft of the digital one is only 3.5 mm in diameter and 14.5 cm long, leaving a much smaller hole than the 6 mm of the bi-metallic one.
The thermometer is light, neat and well made. The display screen is a little small and low-contrast (black on white) for anyone with weakened eyesight. The battery/display casing is plastic, so care needs to be taken when holding near the hot side of a pan, and the thermometer can't be used for jams or sugars. It's also not waterproof, so only clean the probe after use.
Overall, I'm very happy with this product, and would buy another if needed.