UA31B Voltage Tester ABS Non Contact Voltage Test Pencil 12‑1000V High Accuracy NCV Induction for Voltage Detection Item Type: Test PencilModel: UA31BMaterial: ABSPower Supply: 2 x AAA 1.5V (battery not included) Purpose: Electricity numerical test AC Voltage: 12~1000V, 50/60Hz Working Temperature: 0-40℃ Storage Temperature: -10~50℃ Humidity: <95% Altitude: <2000 meters Safety Level: CAT.III 1000V CAT.IV600V Automatic Shutdown: automatic shutdown after no signal induction or no operation for five minutes Undervoltage Reminder: voltage＜2.4 Sensitivity: default low sensitivity at boot High Sensitivity: 12~1000V Low Sensitivity: 48~1000V Special Functions: intelligent identification of live wire and naught wire, triple induction of sound and light alarm, line break point test, high and low sensitivity switch, NCV induction