The ThermoPro TP-18 is a folding instant read thermometer with good accuracy and excellent response times. ThermoPro did not intend for users to leave the unit in food while cooking.
You release the recessed probe by pressing a button near its pivot point. It acts much like a switchblade knife. The unit activates via a separate on/off button. A second button will change the temperature scale from Fahrenheit to Celsius or hold the thermometer reading. The readout illuminates for easy visibility in dim light. The display does not rotate when the thermometer is inverted. You should use the probe locked in its full-out position, and you can fold it back by pressing the same button that released it.
The ThermoPro TP-18 Instant Read Thermometer is powered by two supplied AA batteries. They insert into a non-sealed compartment. Both the battery cover and the probe pivot are not sealed against dust or moisture. Accuracy is within 1% and the response time from 32 to 212º or from 212 to 32º is a very quick two seconds.

Warranty
The unit comes with a one-year limited warranty. You can find the manufacturer’s contact information on an enclosed card, including its website, e-mail address and telephone number.
Our Review of the ThermoPro TP-18 Instant Read Thermometer
This is a handsome, high-performance thermometer at a very reasonable price. Its only drawback is the lack of sealing against moisture. Nevertheless, we’ll give it a Silver Medal overall.