RICHMETERS RM409B True-RMS Digital Multimeter

RICHMETERS RM409B True-RMS Digital Multimeter

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Product Code: E3888
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Product Description

  • Package Weight : 339g

  • Package Width : 11.5cm

  • Package Height : 5cm

  • Package Length: 18.5 cm

This RM409B is a handheld digital multimeter easy to use with high reliability and portability, a perfect tool for the laboratory,factory and home. It can measure AC/DC voltage, AC/DC current, resistance, capacitance, frequency, duty cycle, diode, continuity, NCV and temperature.


9999 counts with ture RMS and auto ranging, reliable and practical.

Can measure voltage, current, resistance, capacitance, frequency, temperature, etc.

Temperature testing,Celsius(℃) and Fahrenheit(℉) show simultaneously.

With large LCD backlight display and data hold, convenient to read data in the dark.

Small size and handheld, with a back bracket for supporting multimeter.

Low power comsumption, powered by 2 * AA batteries.

Automatically powers off after 5 minutes of inactivity to save energy.

Widely used, perfect tool for the laboratory, factory and home.


Model Number: RM409B

Operating Temperature: 0 - 40 ℃

Operating Humidity: ≤75%RH

Storage Condition: -20~60℃

Storage Humidity: ≤80%RH

DIY Supplies: Electrical

Operating Mode: Auto/Manual Ranging

Measuring Inductance Range: no

Measuring Temperature Range:  -20~1000 C/-4F-1832F  

Measuring Capacitance Range: 9.99nF/99.99nF/999.9nF/9.99uF/99.99uF/999.9uF/9.999MF

Measuring Voltage Range: 999.9mV/9.999V/99.99V/999.9V

Measuring Current Range:999.9uA/99.99uA/999.9mA/10A

Measuring Resistance Range: 99.99/999.9/9.999k/99.99k/999.9K/9.999M/99.99M Ohm

Frequency: 99.99Hz/999.9Hz/9.999KHz/99.99KHz/999.9KHz/5MHz

Duty Cycle: 1%-99%

Sample Rate: 3 times per second

Power: 2 * 1.5V AA batteries(Not Included)

Item size: 145 * 74 * 35mm / 5.71 * 2.91 * 1.38in

Package size: 185 * 115* 50mm / 7.28 * 4.53 * 1.97in

Item weight: 168g / 5.93ounces

Package weight: 330g / 11.64ounces


Mearsurement must be made with correct input terminals and functions and within the allowable measuring range.

Do not use the product around explosive gas, vapor, or in damp or wet environents.

Low level of a battery will result in incorrect reading. Change the batteries when battery level is low. Do not make measurements when the battery door is not propely placed.

Please allow 1-3" centimeter due to manual measurement.

Batteries are needed before getting this multimeter work, which is NOT included in the package.

Package List:

1 * Digital Multimeter

2 * Test Leads Pens

1 * Temperature Test Cable 

1 * User Manual 

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