Electronic shelf label system that has: at least one battery-operated shelf label client that has an energy-saving sleep mode without radio communication standby according to a radio standard and an active mode with radio communication standby according to the radio standard and that has a radio wake-up receiver designed so as, on receiving a wake-up signal, to leave the sleep mode and prompt the active mode to be adopted, and an access point that is designed for radio communication with the at least one shelf label client according to the radio standard and that has a radio wake-up transmitter for transmitting the wake-up signal, wherein the radio wakeup transmitter is designed to be controllable in terms of the time at which the wake-up signal is transmitted by the access point, and the access point defines the time as the initiation of a radio connection setup to the at least one shelf label client according to the radio standard, in particular with a lead time for changing from the sleep mode to the active mode.