AC Voltage: 12V~1000V(High sensitivity)<br>48~1000V(Low sensitivity)<br>Frequency:50/60Hz<br>Alarm mode: Sound and light alarm<br>Flash light : White LED<br>Low battery indication<br>Auto power off<br>Switchable battery cover<br>Auto distinguish the Live line and Netural line<br>With 2pcs R03 AAA batteries<br>Packed by double blister<br>