DMiotech Mini Auto Ranging Digital Multimeter w Automatic Recognition of Resistance, DC/AC Voltage, Continuity NCV Multi Meter Tester w LCD Display DM8231 <span class="a-text-bold">Data Hold</span>- Press the &#034;H&#034; button for holding data in display <span class="a-text-bold">Backlit &amp; Torch</span>- Long press &#034;H&#034; 2s to light up the screen and flashlight (Super Bright Torch) <span class="a-text-bold">NCV</span>- Holding the &#034;NCV&#034; button and approaching to object (If AC Voltage was detected, buzzer and indicator will alert) <span class="a-text-bold">POWER</span>- Press for booting and long press 2s to shut down