RS PRO 204-8305, Instruction Manual

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 WARNINGS

Read, understand and follow Safety Rules and Operating Instructions in this manual before 
using this meter.
The meter’s safety features may not protect the user if not used in accordance with the 
manufacturer’s instructions.
Ensure that the test leads are fully seated in the input jacks and keep fingers away from 
the metal probe tips when taking measurements.
Before changing functions using the selector switch, always disconnect the test leads from 
the circuit under test.
Use only UL listed test leads with the proper safety category rating.  
Comply with all applicable safety codes. Use approved personal protective equipment when 
working near live electrical circuits - particularly with regard to arc-flash potential.
Use caution on live circuits. Voltages above 30 V AC rms, 42 V ac peak, or 60 V dc pose a 
shock hazard.
Do not use if the meter or test leads appear damaged.
Verify operation before using meter by measuring a known live voltage. 
Do not use the meter in wet or damp environments or during electrical storms.
Do not use the meter or near explosive vapors, dust or gasses.
Do not use the meter if it operates incorrectly. Protection may be compromised.
Do not operate meter while Low Battery warning is on. Replace batteries immediately. 
Do not apply voltage or current that exceeds the meter’s maximum rated input limits.

Professional True RMS Digital Multimeter/ English

Introduction

The Multimeter wirelessly transmits data to mobile app allowing you to view, save, organize, 
share recordings and take measurements from a safe distance. Functions include AC/DC 
voltage and current, resistance, continuity, capacitance, frequency, duty cycle, temperature,  
diode test and current rang for external flex clamp. True RMS readings provide accurate AC 
measurements. This meter is fully tested and calibrated and, with proper use, will provide 
many years of reliable service. 

Professional True RMS Digital Multimeter/ English

Input Limits

Function

Maximum Input

Voltage AC/DC or AC+DC

1000V AC RMS/1000V DC

µA, mA Current AC/DC  4-20mA%

800mA 1000V fast acting fuse

10A Current AC or DC

3000A Current AC

10A 1000V fast acting fuse 
(10A for 30 seconds max. every 15 minutes)
3000A with external sensor

Resistance, Continuity, Diode Test, 
Capacitance, Frequency, Duty Cycle

600V AC RMS/600V DC

Temperature

600V AC RMS/600V DC

General Specifications

Insulation

Class 2, Double Insulation

Enclosure

Double Molded, dustproof

Diode Test

Test current 1.5mA typical, open circuit voltage 3V typical 

Continuity Test

Audible signal if the resistance is approx. 50Ω or less

Battery Indication
Display

6000 counts OLED display                                                                                              

Over Range Indication 

“OL: is displayed

Polarity

Minus symbol “-“ is displayed for negative polarity

Measurement Rate

3 readings per second, nominal

Auto Power Off

After approx. 30 minutes of inactivity

Input Impedance

10MΩ AC/DC Voltage

Data Logger number
(manual/auto)

About 4000 Values

Date and Time Display

TIME  DATE setting

AC Response

True RMS

AC Bandwidth

50 to 1000Hz 

Battery

A stander AAA 3*1.5V  Alkaline battery   and Lithium CR1220 
battery

Fuses

800mA 1000V (6.3 x 32mm) fast blow/10A 1000V (10 x 38mm) 
fast blow