SEFRAM SEFRAM70 Manuel D'utilisation page 23

Voltage/Continuity/Single Pole Mode
Voltage Measurement
LED  indicates measured voltage is high than ELV limit
(50VAC and/or 120VDC).
• When batteries are not fitted or are exhausted, the tester still
work when measuring> 45VAC and/or >35VDC.
• Timing Rating (tr): 30 seconds, Recovery Time (rt): 240seconds,
when measuring >300V, recovery time is necessary.
• L/R LED may light up when measuring AC voltage.
• ue to the high internal resistance, capacitive and inductive
Voltage (ghost voltage) may be indicated.
 Warning
AC
+DC
-DC