Extech 411 True RMS Multimeter User's Guide, introduces the features and characteristics of the product, usage methods and precautions.
This document is the User's Guide for the Extech 411 True RMS Multimeter (part number EX411). It provides instructions on the safe operation and use of the device for measuring AC/DC voltage, AC/DC current, resistance, diode testing, continuity, and thermocouple temperature. The guide includes important safety warnings, such as avoiding measurement of voltages exceeding 1000VAC/VDC on the COM input and ensuring capacitors are discharged before testing.
| Input Protection Limits (VAC) | 750V |
|---|---|
| Input Protection Limits (V DC or V AC) | 1000V DC/AC |
| DC Current Range | 200mA |
| DC Current Range | 20A |
| Resistance/Continuity Limit | 250Vrms for 15sec max |
| Display | 2000 count LCD |
The maximum input for AC voltage is 750V.
The maximum input for DC or AC voltage is 1000V DC/AC.
Do not make current measurements on the 20A scale for longer than 30 seconds.
The display will indicate '1' if the circuit is open.