IN-E-HL20-V1_16
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
HygroLog HL20 and HL21 data logger:
User Guide
Instruction Manual
Document Type
Page
13
of 23
Document title
3.2 Initial start-up
3.2.1 Battery compartment
The battery compartment is located on the back panel and can be opened after loosening the screw
that holds the cover in place
Insert three fresh AA alkaline batteries in the battery
compartment. Be sure to observe the polarity.
Cover screw
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IN-E-HL20-V1_16
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