ITEAD Studio's Sonoff are low-cost wireless switches based on ESP8622/ESP8285 WiSoC, and supporting WiFi and/or 433 MHz connectivity. They usually come
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Sonoff Mini R3 – small WiFi + eWeLink-Remote (Bluetooth) smart relay switch with DIY mode (REST API)
support Sonoff Mini R3 Smart Switch User Manual
Sonoff Mini R2 - small WiFi smart relay switch with DIY mode (REST API) - eWelink Store
SONOFF MINI R3 Smart Switch – Sonoff India
Sonoff Basic R3-WiFi Smart Switch
SONOFF MINI R3 Smart Switch
SONOFF MINI R3 16A Smart Switch REST API nessuna soluzione di linea neutra con S-MATE eWeLink-telecomando tramite eWeLink Alexa Alice
Sonoff Mini R2 - small WiFi smart relay switch with DIY mode (REST API) - eWelink Store
Sonoff Basic R3-WiFi Smart Switch
SONOFF MINI R3 16A Smart Switch REST API No Neutral Line Solution with S-MATE eWeLink-Remote Control via eWeLink Alexa Alice
Sonoff Mini R2 - small WiFi smart relay switch with DIY mode (REST API) - eWelink Store