Main
Product type	multimeter
Type	digital


Measurement types
Measurements	voltage current resistance temperature frequency duty cycle RPM measure


Specs
Current type	AC / DC
Voltage type	AC / DC
DC voltage minimum	200 mV
DC voltage max.	600 В
Measurement accuracy (V⁻)	0.7 %
AC voltage minimum	200 mV
AC voltage max.	600 В
DC max.	10 А
AC max.	10 А
Impedance minimum	200 Ω
Impedance max.	20 MΩ
Display count	1999
Display value	3 1/2

Features
Functions	diode test continuity test mode autoranging auto power off


In box	battery test probes case (bag)


General
Display backlight
Stand
Power source	battery
Battery type	2xAAA
Dimensions	150x74x43 mm
Weight	233 g
Official Website	drapertools.com
Added to E-Catalog	August 2022
P/N	DMM300

The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Draper 2026 - new arrivals, bestsellers, and the most relevant models Draper.

Buy Draper 41821

When you make a purchase through links on our site, we may receive a affiliate commission.


	Draper 41821 Automotive Digital Multimeter each Auto and manual ranging capable of voltage current resistance diode and continuity testing. Fitted with a backlit LCD scre... moreen DWELL Tach MAX auto power off continuity buzzer and data hold features. Supplied with test leads case and 2x AAA batteries.PTDDRPDIR41821 PowerToolsDirect.com Delivery: in United Kingdom Report	£29.58 Buy in shop

	Draper DMM300 Automotive Digital Multimeter The Draper DMM300 is capable of auto and manual ranging for voltage, current, resistance, diode and continuity testing. This... moremodel is also fitted with a backlit LCD screen and comes supplied with test leads, case and the 2 x AAA batteries required to operate. MachineMart.co.uk Delivery: to United Kingdom Report	£31.99 Buy in shop

	Automotive Digital Multimeter DMM300 Auto and manual ranging capable of voltage, current, resistance, diode and continuity testing. Fitted with a backlit LCD scre... moreen, DWELL, Tach, MAX, Onbuy.com Delivery: in United Kingdom Report	£35.37 Buy in shop

	Draper DMM300 Automotive Digital Multimeter The Draper DMM300 is a specialist automotive digital multimeter designed for electrical diagnostics on vehicle systems. This... moreversatile instrument combines auto and manual ranging capabilities with dedicated automotive testing functions, making it ideal for mechanics and auto electricians working on engine management and electrical fault-finding. Equipped with a backlit LCD screen for use in low-light conditions, the DMM300 handles voltage, current and resistance measurements alongside diode and continuity testing. The instrument features dedicated DWELL and tachometer functions for 4, 6 and 8 cylinder engines, enabling precise ignition system analysis and engine speed measurement. The duty ratio function adds further diagnostic capability for testing pulse-width modulated circuits commonly found in modern vehicles. Practical features include data hold for capturing readings, MAX function for recording peak values, and an automatic power-off function to preserve battery life. The continuity buzzer provides audible confirmation during circuit testing, whilst the compact dimensions and supplied protective case make this multimeter suitable for mobile workshop use or technicians working at multiple sites. Features and Benefits: • Auto and manual ranging for versatile electrical testing • Dedicated DWELL and tachometer functions for engine diagnostics • Backlit LCD screen for improved visibility in workshop conditions • Data hold and MAX features for convenient reading capture • Supplied with test leads and protective carry case Specifications: AC Amps: 2A/10A AC Current: 2A/10A AC Voltage: 200mV/2V/20V/200V/600V Automatic Power Off: Yes Capacitance: N/A DC Amps: 2A/10A DC Current: 2A/10A DC Voltage: 200mV/2V/20V/200V/600V Diode on/off Test: Yes Dimensions: 150mm x 74mm x 43mm Duty Ratio: Yes Dwell: 4CYL, 6CYL, 8CYL Frequency: N/A Resistance (Ohms): 200O/2kO/20kO/200kO/2MO/20MO Symbol Unit Data Hold: Yes TACH: 4CYL/6CYL/8CYL Temperature Range: N/A Weight: 319g (approx.) Battery Type: 2 x AAA (not supplied) Contents: 1 x Automotive Digital Multimeter Tooled-up.com Delivery: to United Kingdom Report	£35.95 Buy in shop

	Draper DMM300 Automotive Digital Multimeter The Draper DMM300 is a specialist automotive digital multimeter designed for electrical diagnostics on vehicle systems. This... moreversatile instrument combines auto and manual ranging capabilities with dedicated automotive testing functions, making it ideal for mechanics and auto electricians working on engine management and electrical fault-finding. Equipped with a backlit LCD screen for use in low-light conditions, the DMM300 handles voltage, current and resistance measurements alongside diode and continuity testing. The instrument features dedicated DWELL and tachometer functions for 4, 6 and 8 cylinder engines, enabling precise ignition system analysis and engine speed measurement. The duty ratio function adds further diagnostic capability for testing pulse-width modulated circuits commonly found in modern vehicles. Practical features include data hold for capturing readings, MAX function for recording peak values, and an automatic power-off function to preserve battery life. The continuity buzzer provides audible confirmation during circuit testing, whilst the compact dimensions and supplied protective case make this multimeter suitable for mobile workshop use or technicians working at multiple sites. Features and Benefits: • Auto and manual ranging for versatile electrical testing • Dedicated DWELL and tachometer functions for engine diagnostics • Backlit LCD screen for improved visibility in workshop conditions • Data hold and MAX features for convenient reading capture • Supplied with test leads and protective carry case Specifications: AC Amps: 2A/10A AC Current: 2A/10A AC Voltage: 200mV/2V/20V/200V/600V Automatic Power Off: Yes Capacitance: N/A DC Amps: 2A/10A DC Current: 2A/10A DC Voltage: 200mV/2V/20V/200V/600V Diode on/off Test: Yes Dimensions: 150mm x 74mm x 43mm Duty Ratio: Yes Dwell: 4CYL, 6CYL, 8CYL Frequency: N/A Resistance (Ohms): 200O/2kO/20kO/200kO/2MO/20MO Symbol Unit Data Hold: Yes TACH: 4CYL/6CYL/8CYL Temperature Range: N/A Weight: 319g (approx.) Battery Type: 2 x AAA (not supplied) Contents: 1 x Automotive Digital Multimeter Mytoolshed.co.uk Delivery: in United Kingdom Report	£35.95 Buy in shop

We recommendCompare using chart →

Draper 41820

from £29.52

multimeter, fast. voltage: 600 mV, 600 В, aC voltage: 6000 mV, 600 В, fast. current: 600 µA, 10 А, aC current: 600 µA, 10 А, resistance: 600 Ω, 60 MΩ, autorange, transistor test, true RMS

compare

Laserliner MultiMeter-PocketBox

from £34.75

multimeter, fast. voltage: 200 mV, 250 В, aC voltage: 2000 mV, 250 В, fast. current: 20000 µA, 0.2 А, aC current: 20000 µA, 0.2 А, resistance: 200 Ω, 20 MΩ, autorange

compare

Sealey MM22

from £32.95

multimeter, fast. voltage: 4000 mV, 600 В, aC voltage: 4000 mV, 600 В, fast. current: 10 А, aC current: 10 А, resistance: 400 Ω, 40 MΩ, autorange, true RMS, NCV

compare

Habotest HT118E

from £33.99

multimeter, fast. voltage: 200 mV, 1000 В, aC voltage: 200 mV, 750 В, fast. current: 200 µA, 10 А, aC current: 200 µA, 10 А, resistance: 200 Ω, 100 MΩ, autorange, true RMS, NCV

compare

Hogert HT1E601

from £27.78

multimeter, fast. voltage: 10000 mV, 600 В, aC voltage: 10000 mV, 600 В, fast. current: 10 А, aC current: 10 А, resistance: 1000 Ω, 100 MΩ, autorange, true RMS, NCV

compare

UNI-T UT131A

from £23.45

multimeter, fast. voltage: 200 mV, 250 В, aC voltage: 200 mV, 250 В, fast. current: 200 µA, 10 А, aC current: 200 µA, 10 А, resistance: 200 Ω, 200 MΩ, autorange

compare

NEO 94-001

from £31.88

multimeter, fast. voltage: 200 mV, 600 В, aC voltage: 2000 mV, 600 В, fast. current: 200 µA, 10 А, aC current: 200 µA, 10 А, resistance: 200 Ω, 20 MΩ, autorange, transistor test, true RMS

compare

Hogert HT1E606

from £29.98

multimeter, fast. voltage: 400 mV, 2000 В, aC voltage: 400 mV, 2000 В, fast. current: 4000 µA, 0.4 А, aC current: 4000 µA, 0.4 А, resistance: 400 Ω, 400 MΩ, transistor test, NCV

compare

UNI-T UT133A

from £34.76

multimeter, fast. voltage: 600 mV, 600 В, aC voltage: 600 mV, 600 В, fast. current: 600 µA, 10 А, aC current: 10 А, resistance: 600 Ω, 60 MΩ, autorange, NCV

compare

Sealey MM03

from £34.95

multimeter, fast. voltage: 6000 mV, 600 В, aC voltage: 6000 mV, 600 В, fast. current: 10 А, aC current: 10 А, resistance: 600 Ω, 0.6 MΩ, autorange, true RMS, NCV

compare

EMOS MD-420

from £39.62

multimeter, fast. voltage: 200 mV, 300 В, aC voltage: 300 В, fast. current: 200 µA, 10 А, aC current: 200 µA, 10 А, resistance: 200 Ω, 20 MΩ, autorange, transistor test

compare

Mastech MS8239C

from £29.48

multimeter, fast. voltage: 400 mV, 600 В, aC voltage: 4000 mV, 600 В, fast. current: 400 µA, 10 А, aC current: 400 µA, 10 А, resistance: 400 Ω, 40 MΩ, autorange

compare

Draper 41821 (DMM300)

Buy Draper 41821

Draper 41821 Automotive Digital Multimeter each

Draper DMM300 Automotive Digital Multimeter

Automotive Digital Multimeter DMM300

Draper DMM300 Automotive Digital Multimeter

Draper DMM300 Automotive Digital Multimeter