
Shelly Plus 1
Relay Module
ESP32-C3 based WiFi/BLE smart relay module with 16A switching capacity, dry contact input, and compact DIN-rail or in-wall form factor. Flashable with Tasmota or ESPHome for local smart home control.
ESP32-C3400KB SRAM4MBWiFi 802.11 b/g/nBLE BLE 5.0
~$12View

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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More to explore — popular traits shared by devices with Use Case: light-control.