● AC Voltage detection: 240V ~ 50kV ● Waterproof● Easy-to-wear on body or belt ● Ultra-bright LED indication● High pitch sound indication● Self-test & diagnostic circuitry● Friendly priority alert reporting● High impact type casing● Different alerting sound & light● Meets EN 61326-1 ● Dimension : 114(L) × 67(W) × 27(D) mm● Weight : Approx. 152g (battery included)● Power supply : 9V(6F22) × 1