ALLOSUN Portable Pen Type Digital Multimeter Logic Probe AC DC Volt Amp Tester DMM Power Supplied by 1 piece 9V(6F22) battery.(battery not provided by seller) Designed according to IEC-61010 concerning electronic measuring instruments with a measurement category(CAT II 600V) and Pollution degree 2. Double injection (avoid shocking), band switch, it is easy to be operated by single hand. Strong backlight, automatic shutdown. In order to ensure the safety, the test needle has a insulation safety protection. Polarity indication Data hold Over range indication Backlight Flashlight Display ( 3 1/2 digit LCD with max reading 1999) Flashlight button Hold button ( to hold the present reading on the display) Function knob Test Probe Flashlight &#034;S&#034; button (For selecting different measurement. AC/DC current or voltage, diode, continuity) Backlight button Probe of test lead ( negative) Test lead <span class="a-text-bold">DC voltage range:</span> 200mV/2V-200V/600V <span class="a-text-bold">AC voltage range :</span> 2V/20V-200V/600V <span class="a-text-bold">Resistance range :</span> 200/2k-2M/20M <span class="a-text-bold">Diode :</span> open circuit voltage 1.5V and current 0.5mA <span class="a-text-bold">DC current range :</span> 20mA/200mA <span class="a-text-bold">AC current range :</span> 20mA/200mA <span class="a-text-bold">Battery:</span> 9V, 6F22 <span class="a-text-bold">Operating Condition:</span>0-40C and relative humidity &lt;75% <span class="a-text-bold">Storage Condition:</span>-20-60C and relative humidity &lt;85% <span class="a-text-bold">Size: </span>230x57x30mm <span class="a-text-bold">Weight: </span>182g (including battery)