Yes, there is a limit of 9 English characters.

Both switches and lamps belong to Bluetooth, and they will occupy a position. With other equipment accessories, they can be added successfully as long as they do not exceed 100.

Up to 16 scenes can be set in one zone, and each device can join up to 8 scenes.

Up to 16 groups can be set in one zone, and each device can join up to 8 groups.

1. The number of online devices in the area is 100 (including accessories, switches, remote controls, and independent sensors)

2. If it is used with a gateway, it is limited to 60 (including accessories, switches, remote controls, and independent sensors).

Different from light groups, zones can be set without limitations.

Longp press the switch (switch + scene) for 5-10s to reset successfully.

Open the APP, click "+", and search for the device. Then click "√" to select all to add the devices. (The devices need to be connected to the network one by one, so the more devices, the longer it takes)