Decide what the measurement record is for
A saved number is only useful if it can be connected to the equipment and fault being investigated. Think about whether the record is for a customer report, repeat visits or internal maintenance history. Our recommendation depends on having a reason to record. Otherwise a conventional instrument and an appropriate note may be the simpler workflow.
Check the app before buying the hardware
A manufacturer's feature description is not the same as a demonstration on your device. Look at the available app, required permissions and whether you can export the information in a useful form. For an employer-managed phone, confirm that the software can be installed. These checks should happen before connected functionality becomes the main reason to purchase.
Ruggedness is a documented rating, not our field test
The enclosure specification is a useful comparison point, but this review does not establish long-term performance under repeated site use. Protect the instrument, inspect leads and follow its operating restrictions. We would avoid translating an ingress rating into a claim that electrical testing in wet conditions is safe; those are separate issues.
How it differs from a Fluke 117
The buying choice is mainly about workflow. The 117 offers electrician-oriented local functions in a familiar handheld format. The Southwire adds the prospect of connected records. Choose the tool that removes a recurring obstacle rather than rewarding whichever has the longer feature list. Both still need to be selected for the actual measurement environment.
What to confirm with the seller
Check that the listing is for the 14090T, not a nearby Southwire model with a similar case. Confirm the included accessories, seller support and current app availability. We would not promise a software workflow solely from an older product listing. If you cannot complete those checks, make the purchase on its standalone capability or choose another instrument.