SEFRAM 7307 Notice D'utilisation page 19

Disable Auto Power Off
Non-Contact Voltage (Volt sense)
NCV
1. Volt sense switch will be activated on any
function or at OFF status.
2. Test leads are not used for the Volt sense test.
3. Press the Volt sense button. The display goes
black, a tone sounds and the red LED lights up
to verify the instrument is operational. The Volt
sense button must be held down to detect the
presence of voltage without use of the leads.
19