DIGITAL VOLTAGE TESTER WITH LCD DISPLAY: Contact measurement from 12 to 300V AC. During contact measurement, long press the &#39;&#39;VOLTAGE&#39;&#39; and the voltage value will display on the screen. This function is only available for contact measurement, not for non-contact measurement. VOLTAGE DETECTOR: In induction mode, the frequency of the beep increases with the intensity of the voltage. tension. When high voltage is detected, the screen will display 'HI', otherwise the screen will display '-- U&#39;&#39;. When no voltage is detected, the screen will display &#39;&#39;---&#39;&#39;. We can use it for phase detection and continuity tests. CONTINUITY TEST AND BATTERY POLARITY TEST: Double indication by screen and beep. S& #39;AUTOMATIC POWER OFF AND FLASHLIGHT: Automatic power off after 5 minutes of inactivity to save power. Specifications AC voltage: 12 ~ 300 V, 50/60 Hz Accuracy: (5% + 3) Operating temperature: 0~40 C Safety category: CAT.II 300V Storage temperature; -10~50 Humidity: 95%; Altitude: 2000m Battery required: 1 1.5V AAA Size: 145*20*22mm Color: BlackNumber of people1 pcs< /p>