KERN GAB Operating Instructions Manual page 12

For battery operation unscrew the battery cover at the bottom.
Insert two 1.5 V batteries (D type). Screw battery cover back on.
Model GAB / GAS
Battery cover
Connection of mains adapter
Model FAB
Battery cover Connection of mains adapter
under batteries
Empty batteries are indicated on the display by „ „. Press ON/OFF-key and
replace the batteries immediately.
12 GAB/GAS/FAB-BA-e-0720