Iso-Tech IDM93N Manuel D'instructions page 15

(6) Diode Check
Range Resolution Accuracy Max.Test Max.Open
1mV ±(1.5%reading + 5digits) 1.5mA 3.2V
* For 0.4V ~ 0.9V
Overload Protection : 600V d.c./a.c. max.
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Continuity : Internal sounder operates when resistance is less than 50 .
(7) Auto Power Off
The meter will automatically shut itself off after approximately 30 minutes after power on.
The meter can be turned back on by switching to another range.
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