− | The Thermocron iButton is a small hardware device to take temperature readings every five minutes and record them internally. No network connection 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 to take temperature readings every five minutes and record them internally. 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. |