Why are some automated execution methods cloud-based, while others are local or LAN-based?

The scenes in the app are divided into three types: cloud-based scenes, local scenes, and LAN scenes.

Cloud-based scenes

They can execute across protocols (Wi-Fi, Zigbee, Ble, etc.), and the scene linkage rules are stored in the cloud. When the cloud determines that the conditions are met, it will execute the corresponding actions.

Local scenes

The devices involved in the scene belong to the same gateway and do not require cloud-based judgment of conditions or actions. The scene linkage rules are stored in the gateway. Regardless of whether the gateway has external network access, as long as the gateway is functioning normally and determines that the conditions are met, it will execute the corresponding actions. This is common in Zigbee/BLE mesh/multi-mode gateways, where the devices corresponding to the conditions and actions in the automation are all sub-devices under the same gateway.

Example: Gateway A has Sigmesh Light 1 and Zigbee Light 2. Create automation: If Sigmesh Light 1 switch (on), then Zigbee Light 2 switch (on). This scene is a local scene.

LAN scenes

Two or more gateways in the same household belong to the same LAN and do not require cloud-based judgment of conditions or actions. They are connected via wired or wireless connections on the same router, with the same LAN IP addresses. The scene linkage rules are stored in one of the gateways. Even if the external network of the router is disconnected, the internal LAN network is normal, and the scene can still be triggered.

Example: Gateways A, B, and C are all part of the same LAN. Gateway B has Zigbee Light 1, and Gateway C has Sigmesh Light 2. Create automation: If Zigbee Light 1 switch (on), then Sigmesh Light 2 switch (on). This scene is an LAN scene.

Change logic

When automations are created, they are initially cloud-based scenes. If they meet the conditions for local/LAN scene implementation as described above, the gateway will take over the scene, and after a period of time, the scene will automatically become a local/LAN scene. If you want to change a local/LAN scene back to a cloud-based scene, without affecting the original scene, you can add conditions such as preconditions or app message push.