Difference between ZM4 and ZM5

Below is a table of differences between the two products

 Description of feature

ZM4

ZM5

 

Attachment of base flange restricted by connector block

Yes

No

 

Cooling fan

Yes

Yes

 

Sensitive adjusting potentiometer

Yes

No

 

Sealed Adjusting potentiometer

 

No

Yes

Fork type connector block

Yes

No

 

Screw terminal connector block

No

Yes

 

Over voltage protection

No

Yes

 

Over temperature protection

 

No

Yes

External buzzer/light warning failure mode

 

No

Yes

Reverse polarity protection

No

Yes

 

Internal failure protection

No

Yes

 

Better output performance (tested in the field by ZM4 users)

No

Yes

 

Two-year warranty

Yes

Yes