SEFRAM MW3105 Manual page 17

Never switch between ranges while connected to high voltage to avoid personal harm and/or damage to the meter.
6. Disconnect test leads from voltage source then switch meter to OFF to conserve power.
3.3 RESISTANCE / CONTINUITY MEASUREMENTS
Remove power from circuit under test before making resistance measurements.
1. Verify that power is off and that any capacitors are discharged in circuit about to be tested.
2. For resistance measurements: In AUTO (default) mode, set function selector to  Range is automatically selected for best
resolution. If the meter is operating in manual ranging mode, select range that closely matches actual resistance expected.
3. For continuity measurements:
Set function selector to
Plug black test lead into COM plug. Plug red test lead into HzF plug.
5. Connect test leads across desired measuring points.
position.
CAUTION
CAUTION
17