Here is a picture of a small Bluetooth “temperature logger” very robust (ABS and aluminum), with a range -40 to 85 C, a memory of 4000 readings and measuring only 5 cm. It can be read more than 30 meters away by an Android or IOS mobile device, or by a permanently installed Bluetooth receiver. Essentially hundreds of these sensors can be read remotely in a few seconds. We have copies available at the Trois-Rivières office if you are interested.

Remote readable temperature sensor
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