This is a Fluke 3000 FC Wireless Multimeter, designed to connect with the Fluke Connect app to allow remote viewing of electrical measurements.
The device features a backlit digital display and is capable of measuring AC/DC voltage up to 1000V, as well as current, resistance, and continuity.
It is independently tested for safe use in CAT IV 600V and CAT III 1000V environments.
The multimeter can display readings from up to three separate wireless modules simultaneously from a distance.