A circuit for detecting battery cell abnormalities in a multi-cell series battery for effectively and quickly detecting abnormalities with a simple, small circuit that provides improved reliability, safety and service life of the multi-cell series battery. A locking mechanism locks the cover laterally to the housing and unlocks it by means of a key. Said tray part is connected to the base part in such a way that it can be displaced between a first position, in which the first tray surface lies opposite the dispenser opening at a first distance and a second position, in which the tray surface lies opposite the dispenser opening at a second distance that is greater than the first. The communication architecture may adjust the bonding configuration to adapt to bonding environment changes affecting the communication capabilities or requirements associated with transmitting the content. Provided are an organic electroluminescent device having a high luminous efficiency and a long life, an asymmetric monoanthracene derivative which materializes the same and a material for an organic EL device.