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7 Function Multimeter AC DC Resistance Current Transistor Diode Audible

SKU CH-V83H-D57AW

A basic digital multimeter with high-contrast LCD, colour-coded dial, transistor tester, audible continuity buzzer, square-wave output and diode test, supplied with leads and 9 V battery

  • FeaturesBattery Powered, true
  • Height4.8 L x 2.6 W x 0.9 H inches
  • Width4.8 L x 2.6 W x 0.9 H inches
  • Length4.8 L x 2.6 W x 0.9 H inches
  • TypeMultimeters, Tach & Dwell Meters
  • Easy on-the-go testing with high-contrast LCD screen
  • Quick range selection via colour-coded dial symbols
  • Checks transistors and continuity with audible buzzer
  • Advanced diode and square-wave signal functions included
  • Ready to use with leads, guide and 9V battery

Compact 7-function multimeter

The ProTechTrader PDM-631 is a battery-powered digital multimeter designed for DIY electronics work and on-the-go testing. It combines seven measurement functions in a handheld unit measuring 4.8 L x 2.6 W x 0.9 H inches. The high-contrast LCD screen and colour-coded dial markings make voltage, current and resistance ranges easy to read in varied lighting.

Upgrade from basic continuity testers

This meter replaces single-function probes by adding AC/DC voltage, resistance, current, transistor hFE, diode test and square-wave output. The jump is worth it when a project requires checking NPN or PNP transistors, verifying diode polarity or generating a simple square-wave signal without a separate bench instrument. The audible continuity buzzer speeds up wiring checks compared to visual-only indicators.

Fits a starter electronics bench

The package includes test leads, an installed 9 V battery and an illustrated user guide so the tool is ready for immediate use. Its compact footprint frees bench space while covering the core measurements needed for hobbyist circuit building, automotive electrical checks and basic troubleshooting. Builders who need higher precision, data logging or additional ranges will require a more advanced instrument.

Highlights

  • Easy on-the-go testing with high-contrast LCD screen
  • Quick range selection via colour-coded dial symbols
  • Checks transistors and continuity with audible buzzer
  • Advanced diode and square-wave signal functions included
  • Ready to use with leads, guide and 9V battery

Specifications

BrandaFe Power
FeaturesBattery Powered, true
Height4.8 L x 2.6 W x 0.9 H inches
Width4.8 L x 2.6 W x 0.9 H inches
Length4.8 L x 2.6 W x 0.9 H inches
TypeMultimeters, Tach & Dwell Meters

Questions about this item

What are the exact dimensions of the multimeter?

The multimeter measures 4.8 inches long, 2.6 inches wide and 0.9 inches high, making it compact enough for a tool bag or glove compartment.

Which step do users often miss when setting up the transistor test?

Users often forget to set the rotary dial to the hFE position and match the transistor pins to the labelled NPN or PNP sockets before inserting the device.

When should the installed 9V battery be replaced?

Replace the 9V battery when the low-battery indicator appears on the LCD or when the audible continuity buzzer sounds weak or fails to activate during a test.

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