What do I have to do if I do not use the Primera-Line energy meter PM 231 E for a longer period of time? February 09, 2023 14:53 Updated During prolonged periods of non-use, remove the batteries from the energy meter to prevent leakage. Related articles How to open the battery compartment of the Primera-Line energy meter / electricity meter PM 231 E? Can the data of the Primera-Line energy meter PM 231 E be read out? What are the measurement and current consumption characteristics of the Primera-Line PM 231 E energy meter? Can I use the Primera-Line energy meter to measure the electricity generated by my balcony power plant? What value do I have to enter for the electricity price in the Primera-Line energy cost meter PM 231 E?