Harbor Freight Tools


DM300 Pocket Sized Digital Multimeter

Pocket sized digital multimeter measures AC/DC voltage. Designed for home owners and auto enthusiasts.

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An easy to use pocket multimeter with integrated test leads offering full functionality AC and DC voltage to 300v, resistance to 40 megohm, capacitance to 100μF, frequency to 100 kHz, continuity with beeper, and diode test. This meter is fully safety rated to CAT III 300v and has been independently tested by ETL. Few other meters on the market offers this small size with such a high level of performance and high safety ratings.

  • AC/DC Voltage: 300v, AC/DC Current: 400mA
  • Resistance: 40MΩ, Capacitance: 100µF, Frequency: 100kHz
  • Display: 4000 Counts, Autoranging, Auto Power Off, Diode Test
  • Audible Continuity, Data Hold, Low Battery Indicator
  • Safety Rating: CAT III 300v

Battery(s) Required
3V, either SR44 or LR44 (2)
AC Volts
Accessories Included
Test leads, batteries, carrying case and user manual.
DC Volt ±0.5% of rdg ±3dgt
; AC Voltage ±0.8% of rdg ±4 dgts
; DC Current ±2.0% of rdg ±3dgts; AC Current ±3.0% of r dg ±4 dgts
; Resistance ±1.0% of rdg ±3dgts
; Capacitance ±3% of rdg ±3dgts; Frequency ±0.5% of rdg ±3dgts
Battery(s) Included
Frequency (Hz)
Product Height
0.7 in.
Product Length
4.7 in.
Product Weight
0.24 lb.
Product Width
2.7 in.
Shipping Weight
0.35 lb.
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.