What are the differences between the zero live wire switch and the single live wire switch?

Traditional mechanical switches in China require only one live wire, but Smart Home switches require both a live wire and a neutral wire. To install Smart Home switches, re-cabling is required, resulting in huge installation and reconstruction workloads. To widely use single live wire intelligent switches, you need to solve the following cabling problems: 1. The wiring methods are different. 2. To install a zero live wire switch, you must ensure that your home is equipped with a neutral wire (identified by N, which can be confirmed by an electrician). A single live wire switch can replace a traditional mechanical switch, without the need for a neutral wire.