Data transmission occurs serially. The EIB installation mainly consists of sensors that act as command senders, such as light barriers, switches, thermostats, infrared devices, anemometers, and timers, as well as actuators that serve as command receivers, like motors, heaters, fans, lamps, and blinds. The EIB bus wiring can be installed on, in, and under plaster, in conduits and cable ducts, in dry, damp, and wet rooms.