Specifications:
Working voltage: 100V-240V ~, 50Hz / 60Hz
Working current: 2A Max (fan type load)
Wiring method: zero fire wire
Load type: within 400W (motor-type load)
Product material: tempered glass panel + fireproof PC case
Size (height * width * thickness): 86mm * 86mm * 34mm
Operating environment: temperature 0 ℃ ~ 40 ℃, relative humidity less than 95%
Wireless standard: Wi-Fi IEEE802.11 b / g / n 2.4GHz
Security mechanism: WPA-PSK / WPA2-PSK

How to Check the Zero Line?

According to the eletrical professional specifications,Zero line is generally blue or black wire,

you can judge whether to lay Null line according to the basis.

But the wiring in the family probably did not press normative wiring,

cannot undertake distinguishing from color,suggest you ask the opinion from professional personage.

For example:

The switch needs a null line.

The switch support Tuya app

loudspeaker support Tmall / Amazon Alexa /Google Home

The switch speaker supports 2.4g signals from routers, not 5G.

USER MANUAL