10A Relay
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Sonoff BasicR2
Smart Switch
WiFi smart switch based on ESP8285, widely used in the open-source home automation community. Easily flashable with Tasmota or ESPHome for local-only smart home control without cloud dependency.
ESP828580KB1MBWiFi 802.11 b/g/n
~$5View

Sonoff MINIR4 Extreme
Relay Module
Ultra-compact ESP32-C3 WiFi smart switch module with 10A relay, detached switch mode, and the smallest form factor in its class. Fits any wall box. Flashable with Tasmota for local control.
ESP32-C3400KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 5.0
~$10View
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