Speed up your testing with Martindale's MM65 autoranging digital multimeter.
When testing, the MM65 will automatically select the appropriate range, saving time and effort from the user. The meter can be used to test DC voltage to 600V, AC voltage to 60V, AC/DC current to 10A, resistance to 34MΩ and also tests diode/continuity.
Results are shown on the MM65's large 3 and ¾ digit LCD screen which also includes analogue bar graph display. Test selection is made by a rotary dial on the front of the tester.
To conserve battery power the MM65 will automatically power itself off when left idle.
Electrical | |
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Accuracy | All specified accuracies are at 23°C ± 5°C, <75% RH for 1 year |
Temperature Coefficient | 0.1 x (specified accuracy) per °C (0 to 18°C, 28 to 50°C) |
DC Voltage | |
Ranges | 340mV 3.4V 34V 340V 600V |
Resolution | 0.1mV 0.001V 0.01V 0.1V 1V |
Accuracy | ±(1.0% of rdg + 2 digits) |
Input Impedance | 340mV: >100MΩ 3.4V: 10MΩ 34 to 600V: 9.1MΩ |
Overload Protection | 600V DC or AC RMS |
AC Voltage (50 to 500Hz) | |
Ranges | 3.4V 34V 340V 600V |
Resolution | 0.001V 0.01V 0.1V 1V |
Accuracy | ±(2.0% of rdg + 5 digits) |
Input Impedance | 3.4V: 10MΩ 34 to 600V: 9.1MΩ |
Overload Protection | 600V DC or AC RMS |
DC Current | |
Ranges | 340μA 3400μA 34mA 340mA 10A |
Resolution | 0.1μA 1μA 0.01mA 0.1mA 0.01A |
Accuracy | 340μA to 340mA ranges: ±(2.0% rdg + 2 digits) 10A range: ±(3.0% of rdg + 3 digits) |
Note | Current on 10A range applied for 60 seconds max followed by 10 minute cooling period |
Input Protection | 0.5A/500V fast-blow ceramic fuse 10A/500V fast-blow ceraminc fuse |
AC Current (50 to 500Hz) | |
Ranges | 340μA 3400μA 34mA 340mA 10A |
Resolution | 0.1μA 1μA 0.01mA 0.1mA 0.01A |
Accuracy | 340μA to 340mA ranges: ±(2.5% of rdg + 5 digits) 10A range: ±(3.5% of rdg + 5 digits) |
Note | Current on 10A range applied for 60 seconds max followed by a 10 minute cooling period |
Input Protection | 0.5A/500V fast-blow ceramic fuse 10A/500V fast-blow ceramic fuse |
Resistance | |
Ranges | 340Ω 3.4kΩ 34kΩ 340kΩ 3.4MΩ 34MΩ |
Resolution | 0.1Ω 0.001kΩ 0.01kΩ 0.1kΩ 0.001MΩ 0.01MΩ |
Accuracy | 340Ω to 340kΩ ranges: ±1.5% of rdg + 4 digits) 3.4MΩ range: ±(2.5% of rdg + 4 digits) 34MΩ range: ±(5.0% of rdg + 5 digits) |
Open Circuit Voltage | -0.45V DC (-1.2V DC on 340 range) |
Overload Protection | 500V DC or AC RMS |
Continuity | |
Audible Indication | <35Ω |
Response Time | 500ms |
Overload Protection | 500V DC or AC RMS |
Diode Test | |
Test Current | 1.0mA |
Resolution | 10mV |
Accuracy | ±(3.0% rdg + 3 digits) |
Audible Indication | <0.25V |
Open Circuit Voltage | 3.0V DC typical |
Overload Protection | 500V DC or AC RMS |
General Specifications | |
Display | 3 ¾ digit LCD display with maximum reading of 3400 |
Analogue Bargraph | 34 segments with measurements 12 times per second |
Polarity | Automatic, positive implied, negative polarity indication |
Overrange | (OL) or (-OL) is displayed |
Zero | Automatic |
Low Battery Indication | Symbol is displayed when battery voltage drops below the operating level |
Measurement Rate | 2 times per second, nominal |
Auto Power Off | After approx 10 minutes |
Operating Environment | 0 to 50°C at <70% RH |
Storage Environment | -20 to 60°C at <80% RH |
Altitude | Up to 2000m |
Power | Single standard 9V battery, NEDA 1604, HIS006P, IEC 6F22 |
Battery Life | 200 hours typical with carbon-zinc |
Dimensions | 165 (H x 78 (W) x 42.5mm (D) |
Weight | Approx 285g |
Safety | |
Conformity | BS EN 61010-1 CAT III 600V |
Class | Class II: double insulation |
Pollution Degree | 2 (for indoor use) |