The Testo 760-3 Digital Multimeter detects the lead connection and prevents switching from V to A or A to V if leads are not in proper socket. This prevents accidentally blowing the meter's fuse because of incorrect connections. The Testo 7603 has an AC/DC voltage measuring range of 1000 V, TRMS, duty cycle, low pass filter, and temperature measuring. Testo's exclusive auto-test setup enables the user to simply turn on the unit, connect the leads, and begin measuring.
The function and range settings are always correct because the measurement parameters are detected and set automatically. Three easy-to-read buttons replace the traditional rotary switch when selecting manual test functions.