DS1993L-F5+ iButton Hygrochron iButtons Yellow indicates that the device

Yellow indicates that the device is recognized by the computer

The iButton® Log Typer™ will input the alarm information of the iButton® held on the read head where the cursor is placed in an open word processing program in the font style and size specified in the document

07VDC (100% humidity)

When using a Link45 or Link12

and the other  for grounding

DS1993L-F5+ iButton Hygrochron iButtons Yellow indicates that the deviceThe DS1993L F5+ is a memory iButton that runs through a 1 Wire system to track progress, record logging types, and store calibration constants. The DS1993L F5+ also has an operating temperature of 40C +70C with 4096 bits of read write memory. This iButton is resistant to dirt, moisture, and shock, which makes it great for mounting not only onto fobs and ID badges. It can also be mounted to DS1402 cables and circuit boards. For more information on this