True-RMS Multimeter

June 26, 2018
FLIR's multimeter offers intuitive on-screen menu navigation.

FLIR DM66 electrical and field-service true-root mean square (True-RMS) multimeter is ideal for commercial electricians, automation field service, and electronics technicians installing and maintaining electrical and electronic systems. Equipped with variable frequency drive (VFD) mode and an unmatched feature set, the DM66 is easy to use, durable, and offers long-term stability and quality for extended field use.


The compact and ergonomic DM66 offers intuitive on-screen menu navigation and accessible buttons that allow for one-handed operation. The flashing backlight and audible indication simplifies the task of checking wiring connections and switching operation in noisy work environments.


With broad DMM test functions, including low-impedance (LoZ) mode, temperature (Type-K thermocouple), and extended voltage measurement range up to 600 Volts, the DM66 has all the features you need in one tool. It can measure AC/DC voltage, current (A, mA, ?A), frequency, resistance and continuity, diode, capacitance, and temperature.


For non-contact voltage detection, the DM66 features a visual indicator and audible beep tones proportional to the field strength. Technicians can use attachable test leads for contact voltage detection, allowing for a more precise indication of live wires.


The DM66 is CAT IV-300V and CAT III-600V safety category rated, IP40 ingress protection rated and 2 meter (6.6 feet) drop-test rated. Equipped with extensive standard equipment, the unit comes with high-quality silicone test leads, alligator clips, integral test lead storage/holder, AAA batteries, and a soft carrying case.

Auto Power Off:  Yes
Drop test: 2 m
IP Rating: IP40
Capacitance Range: Basic Accuracy: 200.0 nF ±1.5% 200.0 µF ±1.5% 10 mF ±4.5% 10.00 mF ±5.0%
Diode Test Range: 3.000 V Basic Accuracy: ±0.9%
Frequency Range Range: 99.99 kHz Basic Accuracy: ±1.0%
Resistance Range: Basic Accuracy: 600.0 k? ±0.5% 6.00 M? ±0.3% 60.00 M? ±0.9%
Thermocouple –40 to 752.0°F DMM ± (1.0% + 3°F), –40 to 400°C DMM ± (1.0% + 1.5°C)
VFD AC Voltage Range: 600.0 V RMS Basic Accuracy: ±1.0%
Continuity check Between 30 ? and 480 ?
AC/DC LoZ V Range: 600.0 V Basic Accuracy: ±2.0%
AC/DC mAmps Range: 600.0 mA Basic Accuracy: ±1.0% / ±0.7%
AC/DC microAmps Range: 6000 µA Basic Accuracy: ±1.5% / ±1.0%
AC/DC mVolt Range: 600.0 mV Basic Accuracy: ±1% / ±0.4%
AC/DC Voltage Range: 600.0 V Basic Accuracy: ±1.0% / ±0.4%
AC/DC Amps Range: 10.00 A Basic Accuracy: ±1.5% / ±1.0%