You can use the following batteries for the RM C 9010 smoke alarm device:
9 volt DC zinc-carbon block batteries
9 volt DC lithium block batteries
9 volt DC alkaline block batteries
Included in the scope of delivery of the RM C 9010 is a 9 V DC zinc-carbon block battery.
Please ensure that the batteries are suitable for smoke alarms.
These can usually be recognised by the smoke alarm symbol on the packaging.