Extech 380940 - Manuals

380940-EU-EN-V4.1-4/12 2 Introduction Congratulations on your purchase of the Extech 380940 True RMS Watt Clamp DMM. This meter combines multimeter and clamp meter functionality in one convenient meter. Careful use of this meter will provide years of reliable service. Safety 1. NEVER exceed the spec...

380940-EU-EN-V4.1-4/12 5 Operation AC + DC Power Watt Measurements 1. Connect the test leads to the voltage source in parallel with the load (refer to diagram). 2. Clamp onto one of the wires connected to the load. 3. Select the AC or DC voltage range using the function select switch and check the v...

380940-EU-EN-V4.1-4/12 7 Auto Power OFF To extend battery life, the meter will auto power off after 30 minutes of operation. To resume operation either turn the meter OFF and then ON again or press the HOLD button. Battery Replacement 1. When the low battery symbol appears on the LCD, the batteries ...