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Battery
13. Battery
The touch terminals are equipped with rechargeable lithium batteries that are not user-replaceable.
The battery is needed to keep the real-time clock running (date and time).
When the touch terminal is installed for the first time, the battery must be charged for 48 hours. When
the battery is fully charged, data backup at 25°C is guaranteed for 3 months.
HM504
14. LED indicator on the front
The following table shows how the LED indicator works.
Symbol
20
Battery
Color
State
Red
ON
ON
Green
Flashing
HM507, HM510
Meaning
Hardware fault or battery low
Normal operation
Communication error
ACGM0194V3EN Version 3.0
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