IEC PAS 63421:2022（E）本书18定义了LED灯具和可连接至灯具的传感/通信模块（灯具扩展模块，LEX-M）之间的标准化接口。该接口旨在用于具有高IP等级的户外应用。LEX-M可向灯具提供例如感官输入或灯具与网络之间的通信。本书1定义了构成Zhaga接口规范基础的常见概念。此外，本书1规定了LED灯具Zhaga兼容组件的一般要求。

IEC PAS 63421:2022(E) This Book 18 defines a standardized interface between a LED Luminaire and a sensing/communication module (Luminaire Extension Module, LEX-M) that can be attached to the Luminaire. The interface is intended to be used in outdoor applications with high IP rating. The LEX-M may provide for example sensory inputs to the Luminaire or communication between the Luminaire and a network. This Book 1 defines the common concepts that underlie the Zhaga interface specifications. In addition, this Book 1 specifies general requirements for Zhaga compliant components of LED Luminaires.