It can also be devided into many types like Ewelink Smart Relay, Tuya Smart Relay and so on for different models.http://www.hochiot.com/smart-relay/ewelink-smart-relay/
It can also be devided into many types like Ewelink Smart Relay, Tuya Smart Relay and so on for different models.http://www.hochiot.com/smart-relay/ewelink-smart-relay/