ALLOSUN Handheld Digital Multimeter TRMS Dual Fuse LCD Auto AC DC Volt Meter Ohm Amp Temp Tester Tool with USB Terminal DMM Power Supplied by 1 piece 9V battery,6F22 or equivalent.(Battery not provided by seller) Measures true-rms,AC voltage and true-rms AC current. Transfers the measurement readings of the meter to a computer through standard USB port. Provides antomatic polarity indication,manual range mode and autorange mode. Portable size with great powerful functions. Polarity indication Data Hold Back light Overrage indication Max/Min Mode Automatic Power- Off USB Terminal DC voltage &amp; current True- arms AC voltage &amp; current Frequency Diode Temperature Continuity Duty Cycle <span class="a-text-bold">Maximum voltage</span> between any terminal and earth ground: 600Vrms <span class="a-text-bold">Fuse protection</span> <span class="a-text-bold">for A</span> / mA Jack inputs: 630mA, 690V, FAST, Min. Interrupt Rating 20000A <span class="a-text-bold">Fuse protection for 10A</span> Jack inputs: 10A, 690V, FAST, Min. Interrupt Rating 20000A <span class="a-text-bold">Display</span>: LCD, with a max. Reading of 9999<br> Overrange indication: OL shown on the display. <span class="a-text-bold">Negative polarity indication</span>: - shown on the display automatically <span class="a-text-bold">Sampling rate</span>: about 3 times/sec <span class="a-text-bold">Operating environment:</span> 0 to 40, &lt;75%RH <span class="a-text-bold">Temperature coefficient</span>: 0.2 x (specified accuracy)/ (&lt;18 or &gt;28) <span class="a-text-bold">Storage environment</span>: -30 to 60, &lt;85%RH <span class="a-text-bold">Battery:</span> 9V, 6F22 or equivalent(Not provided by seller) Manual book Test lead K type thermocouple Adapter USB Data Cable and CD