It's HIOKI DT4211 digital MM
In Electrical Characteristics section it states:
Rated power voltage: 1.5 v DC x2, use LR6 AA Alkaline battery 2x 1.5v
in Accuracy Table section, it states:
Accuracy warranty period: 1 year
Regulated Power Supply range: 2.4 V +- 0.15 v or more until Bat lights up
What'd 'Regulated power supply range' specification mean?
Does it mean the DMM can also use 2x 1.2 v AA battery supply as long as it doesn't complain warning Bat low ?
And what is 'Accuracy warranty period 1 year' supposed to mean?
Does DMM maker think it'll be likely degraded quickly to lower quality after a year so he may not give a damn anything to be responsible?
Anyone who would sincerely help me, of course I'm so much thankful