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ISO/IEC 14543-3-10:2020(E) specifies a wireless protocol for low-powered devices such as energy harvesting devices in a home environment. This wireless protocol is specifically designed to keep the energy consumption of such sensors and switches extremely low.The design is characterized by. keeping the communications very short, infrequent and mostly unidirectional, and. using communication frequencies that provide a good range even at low transmit power and avoid collisions from disturbers.This allows the use of small and low-cost energy harvesting devices that can compete with similar battery-powered devices. The messages sent by energy harvesting devices are received and processed mainly by line-powered devices such as relay switch actuators, repeaters or gateways. Together these form part of a home automation system, which, when conforming to ISO/IEC 14543 (all parts), is defined as a home electronic system.This document specifies OSI Layers 1 to 3 of the amplitude modulated wireless short-packet (AMWSP) protocols.The AMWSP protocol system consists of two and optionally three types of components that are specified in this document. These are the transmitter, the receiver and optionally the repeater. Repeaters are needed when the transmitter and the receiver are located in such a way that no good direct communication between them can be established.Protection against malicious attacks is handled in the upper layers and thus not treated in this document.