The testing of this voltage tester can be achieved without physical contact for its ncv inductive probe.<Br /> <br/>features:<br/>for testing ac voltage.<Br/>recognition of live/null wire.<Br/>triple alarm of sound, light and screen.<Br/>energy-saving and bright lcd screen.<Br/>high and low voltage signal indicator.<Br/>buzzer alarm - loud and sensitive.<Br/>white led lighting - energy-saving and convenient.<Br/>automatic shutdown.<Br/>switch key.<Br/>good sensitivity of ncv sensor.<Br /> <br/>specifications:<br/>dual range of ac voltage: 48v-1000v/12v-1000v<br/>frequency: 50hz / 60hz<br/>alarm mode: sound and light alarm<br/>electric torch: led illumination<br/>low-voltage indicator lamp: yes<br/>power source: 2 * 1.5V aaa batteries (not included)<br/>security level: ce cat. Iii 1000v / cat. Iv 600v<br/>service temperature: 0-40℃<br/>storage temperature: -10-50℃<br/>altitude: &lt;2000m<br/>package size: 170 * 30 * 30mm / 6.69 * 1.18 * 1.18In<br/>package weight: 66g / 2.33Ounces<br /> <br/>note:<br/>1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures.<Br/>2.Please allow 10-20mm measuring deviation due to manual measurement.<Br /> <br/>package list:<br/>1 * lomvum non-contact voltage tester compact pen<br/>1 * user manual