The Thermocron iButton is a small hardware device that records the temperature every five minutes onto its non-removable memory. No network (Bluetooth, Wifi, etc.) is required. No other device is required until you want to transfer the logs to a computer to read them. | The Thermocron iButton is a small hardware device that records the temperature every five minutes onto its non-removable memory. No network (Bluetooth, Wifi, etc.) is required. No other device is required until you want to transfer the logs to a computer to read them. |