Sintron ST-031 Open Source Smart Relay Controller – ESP8266 ESP-01 DIY Your own Smart Device/Plug for Amazon Alexa…
Amazon.com Price: $4.95 (as of 06/02/2022 16:51 PST- Details)
(1) Onboard Module:ESP8266 WIFI Module.
(2) Onboard Relay:5V,10A/250V AC 10A/30V DC relay.
(3) Function: Mobile phone and wifi module equipped with one router,and control the relay by APP.
