Keysight U1231A Guide De Démarrage Rapide page 8

Non-contact voltage detector (Vsense)
Voltage could still be present even if there is no alert
WARNING
indication. Do not rely on the Vsense detector with
shielded wire. Never touch live voltage or conductor
without the necessary insulation protection.
The Vsense detector may be affected by differences in
socket design, insulation thickness, and insulation
type.
2
AC
Voltage source
3
> 1 s
1
Press
to change the Vsense detector's sensitivity
NOTE
from Hi.SE (high sensitivity) to Lo.SE (low sensitivity).
8 Keysight U1231A/U1232A/U1233A Quick Start Guide