We won't let our customer waste their money. Buy Hantek HTM208B 8-channel Temperature Data Logger Rechargeable Handheld Temperature-recording... Overview This product can measure four different surface temperature at the same time and has the function of recording and storing 20 groups of temperature data and high and low temperature alarm (high and low temperature data can be set and adjusted). Digital 2 Channels K-Type Thermometer w/ 4 Thermocouples (Wired High Temperature Thermometer -328 To 2501°F YZT Meter 4-Channel K-Type Temperature Thermometer Measurement Range- 328℉~2501℉,Temperature High Temperature Probe ◆EASIER TO HOLD AND READ---The non-slip design is suitable for human body functions, easy to grip and has a backlight for working in dark environments. 4 PCS Thermocouple Probe Sensor -104℉-752 ℉ 9V Battery Included. JuviPerpric Digital K Type Thermocouple Thermometer, Dual Channel Thermocouple Tester(-238~3212 It can also be used to measure low temperature objects such as liquid nitrogen and liquid hydrogen. Application Field It can measure the temperature of liquid, steam and gas medium and solid surface directly such as high temperature objects of steelmaking furnace and coke oven.