Amprobe AM-160-A TRMS Precision True RMS Digital Multimeter with PC Connection

Top-of-the-line, affordable digital multimeter for professional environments. AC & DC voltage to 1000V, AC & DC current to 10A, plus resistance, frequency, capacitance, duty cycle & more.


The Amprobe AM-160-A TRMS True RMS digital multimeter (DMM) offers all capabilities of the Amprobe AM-140 TRMS True RMS Digital Multimeter, but with higher accuracy. The AM-160 also accepts dual Type-K thermocouples for temperature measurement from -58 to +1832°F or -50 to +1000°C. Both the AM-140 and AM-160-A offer an optical RS232 PC interface and meet the needs of technicians testing electrical circuits up to 1000V and 10A, as well as the needs for testing components and digital logic. Component test capabilities include resistance, capacitance, frequency, diode test, and continuity. Circuit test capabilities include duty cycle, logic test, and dBm. 


  • True RMS
  • Optically isolated RS232 PC interface
  • Six-digit display
  • MAX, MIN MAX-MIN recording
  • Peak hold
  • Auto and manual ranging
  • Intelligent auto power off
  • Data hold
  • Relative zero mode
  • Audible and visual warning against improper plug-in
  • DC Loop Current 4-20mA
  • dBm reading with 20 selectable impedance value
  • Backlight display
  • Large, easy to read LCD display
  • Diode test
  • Audible continuity test
  • Safety: CAT III 1000V, CAT IV 600V
  • Wide choice of Amprobe multimeter accessories, including dual thermocouple channels.


DC Voltage Ranges

500.00 mV, 5.0000V, 50.000V, 500.00V, 1000.0V

DC Voltage Accuracy

±0.05% rdg ± 2 lsd

True AC RMS Voltage Ranges

500.00 mV, 5.0000V, 50.000V, 500.00V, 1000.0V

AC Voltage Accuracy

±0.8% rdg ± 20 lsd

DC Current Ranges

500.00 μA, 5000.0 μA, 50.000 mA, 500.00 mA, 5.0000A, 10.000A

DC Current Accuracy

±0.5% rdg ± 20 lsd

AC Current Ranges

500.00 μA, 5000.0 μA, 50.000 mA, 500.00 mA, 5.0000A, 10.000A

AC Current Accuracy

±0.5% rdg ± 50 lsd

True AC RMS Coupling

AC or AC + DC

True AC RMS Crest Factor

5:1 at full scale

Overload Protection

Fast-blow fuses

Resistance Ranges

500.00 Ω, 5.0000 kΩ, 50.000 kΩ, 500.00 kΩ, 5.0000 MΩ, 50.000 MΩ

Temperature Measurement

Dual Type-K thermocouple, -58 to +1832°F or -50 to +1000°C.

Frequency Range

5.0000 Hz to 200.000 kHz

Capacitance Ranges

50.00 nF, 50.00 nF, 5.000 µF, 50.00 µF, 500.0 µF, 9999 µF

Duty Cycle Measurement

0.1% to 99.99%, 5V logic, 5 Hz to 500 kHz

4-20 mA Current Loop Test

0-100% of span

Continuity Test

Audible indication at < 40 Ω in 100 ms

Diode Test

0.8 mA, 3.5 Vdc


5-4/5 digits (50000 count) backlit LCD display plus 42-segment bar graph

Measurement Rate

5 times per second in fast mode (4-4/5 digit display)
1.25 times per second in stable mode (5-4/5 digit display)

Operating Temperature

0°C to 45°C (32°F to 113°F) at < 70% RH

Storage Temperature

-20°C to 60°C, < 80% RH (with battery removed)

Power Supply

9V alkaline battery, NEDA 1604, JIS 006P, IEC 6F22

Battery Life

150 hours typical with alkaline


196 x 97 x 46 mm (7.7 x 3.8 x 1.8 in)


390 g (14 oz) with battery


 Optional Accessories

ACF-3000 AK

3000A AC Flexible Clamp-on Attachment


1000A TRMS AC/DC Clamp-on Attachment

CT-600 AC/DC

600A AC/DC Clamp-on Attachment


400A AC Clamp-on Attachment


Milli-Amps to 30A AC/DC Clamp-on Attachment

DKTA-620 and two of TPK-56

Dual input Thermocouple adapter with two thermocouples -50°F to 600°F
(AM-160-A TRMS Only)


Alligator Clips (for test leads)

RS-232 KIT1

PC Interface kit (PC connection cable with software)


USB to RS-232 Adapter


Carrying Case



Replacement Parts (supplied with product)


Type-K thermocouple (AM-160-A TRMS only)


Test leads with set of alligator clips (alligator clips are not supplied with product)


Fuse 1A/1000V IR 10kA for mA/uA terminal (AM-160-A TRMS)


Fuse 15A/1000V IR 10KA or 11A/1000V IR 20kA for Amp terminal (AM-160-A TRMS)


Instruction Manual