Danfoss RET2000B-RF + RX1-S Bedienungsanleitung Seite 11

Low Battery Indications
For battery powered thermostat (RET2000B-RF) when the
batteries require replacement the battery low symbol will fl ash.
Batteries should be replaced within 15 days, after which the
thermostat will turn off the load it is controlling.
Danfoss Heating
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