IDEAL 480 Serie Manuel D'instructions page 15

Low Battery and Battery Replacement
Replace the battery as soon as the low battery indicator
appears to avoid false readings. Refer to the following figure
to replace the battery.
Battery Cover
9V Battery
Remove test leads from the Meter before opening the battery
cover or meter case.
Specifications
General Specifications
Maximum voltage applied to any terminal:
1000 Vac rms or 1000 Vdc. rms
Display: 6000 counts.
Polarity Indication:
Automatic, positive implied, negative indicated.
Overrange Indication: OL
Battery Life: 150hours ALKALINE Battery (No Backlight)
Low Battery Indication:
Voltage drops below operating voltage,
Power Requirement: 9V battery
Auto Power Off: 20 minutes.
Operating Temperature: -10 ~10°C
Screw
Caution
10°C ~ 30°C (<80% RH),
30°C ~ 40°C (<75% RH),
40°C ~ 50°C (<45%RH)
15
will flash.