Purchased with uncertainty about the reliability due to the low price. Was very surprised at how great they worked. I needed some remote high temperature heat treatment to kill bed bugs and roaches. This thing reads 159 degrees for 5 hours straight. I ended up getting six of these so I could stuff them into my giant couch and put the couch in a heated tent, monitoring the temperature inside the couch to make sure it reached deadly core temperatures within hours of moving. This is a new home that is not infected. I like the app that allows you to monitor all 6 at the same time and see the measurement trend for the last few hours. I recommend them to anyone who needs to control the temperature remotely (Bluetooth) at a very affordable price. Many Thanks
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