Harbor Freight Tools
Mini Cart


DM1000 Electrician's HVAC Contractor TRMS Multimeter

Available by Jan. 29

The Ames Electrician's HVAC Contractor TRMS digital multimeter is the choice for professional electrical contractors.

Due to popular demand this product is currently out of stock, but will be back in stock by Jan 29. Order now to reserve your unit.


Expected to Ship Jan. 29

+ Add to My List

Product Overview

The Ames™ True-RMS digital multimeter has a full menu of features. Use this professional multimeter to measure and verify the presence of voltage before connecting new equipment or performing repairs. The LoZ feature helps detect the presence of "ghost voltage" when installing cable or tracing faults on cable runs. Its µA and temperature measurement features are designed for HVAC applications, testing flame sensors, and making temperature measurements. This meter is fully safety rated to CAT III 1000v providing an extra measure of safety for high voltage applications and has been independently tested by ETL.

  • AC and DC voltage Measurements up to 1000v
  • Resistance range: 66MΩ
  • AC/DC Current: 10A
  • Build in non-contact voltage measurement
  • Auto-Hold captures the first stable displayed value
  • Display: 6000 Counts, True RMS
  • Audible Continuity, Data Hold, Low Battery Indicator
  • LoZ low input impedance: helps prevent false readings due to ghost voltage
  • Auto ranging, diode test, bright display / back light, and auto power off


AC Volts
Accessories Included
Test leads, temperature probe, magnetic hanging strap, multifunction test socket, carry case
DC Voltage: ±(0.8%+3)AC Voltage: ±(1.0%+3) DC Current: ±(2.0%+5) AC Current: ±(3.0%+5) Resistance: ±(1.5%+5)Temperature: ±(1.0%+3) Capacitance: ±(4.0%+5) Frequency V Position: ±(1.5%+5) Frequency Hz Position: ±(1.5%+5) Duty Cycle: ±2%
Battery type
Battery(s) Included (y/n)
Battery(s) required
one 9V
Product Height
52 mm
Product Length
175 mm
Product Weight
1.15 lb.
Product Width
85 mm
Shipping Weight
1.60 lb.
Temperature range (deg F)
0° C~1000° C/ -32° F~1832° F
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.