probe1Name is a read-write string (up to 64 characters) that lets an admin assign a human-readable label to the Unity PDU's first environmental sensor probe. Environmental probes typically report temperature or humidity, so naming probe 1 helps distinguish its readings from probe2Name's readings when both are attached to different points in a rack. For example, an admin might set probe1Name to something like 'Top-of-Rack Temp' to identify that this probe is mounted near the top of the enclosure rather than at the bottom.