A DMM shows the measured values on an LCD display. Higher-quality multimeters are only equipped with a rotary switch for voltage, current or resistance measurement and then automatically set the respective measuring range so that the polarity is also evaluated autonomously. As an additional functionality, some instruments can also store measurement data or transfer them to a computer.
With their extensive measuring potential, DMMs are real jacks-of-all-trades.
When buying, make sure you have a sufficient CAT category!
DMMs are often exposed to higher voltages than the user assumes. Due to unexpected voltage peaks, the DMM may no longer be approved for the voltage range to which it is exposed. This puts the user in extreme danger. Therefore, be sure to purchase a device of the correct overvoltage category CAT I, II, III, IV according to DIN EN 61010-1.
According to standard EN 61010-1, the categories are defined as follows:
| CAT I: | Measurements on circuits that are not directly connected to mains power, such as batteries |
| CAT II: | Measurements on circuits that are directly electrically connected to the low-voltage system, such as e.g. classic connectors |
| CAT III: | Measurements in building installations, such as devices that are permanently connected to the distribution board |
| CAT IV: | Measurements at the source of the low-voltage installation, such as main connection, meter, etc. |
In our shop we offer digital handheld multimeters suitable for quick use as well as local digital multimeters, such as battery testers, frequency counters and many more. Find your right product.