Highlights

• ESP8266-based Wi-Fi relay rated for 16 A with built-in power consumption monitoring (voltage, current, watts, kWh).
• Ships with eWeLink cloud firmware but commonly reflashed with Tasmota/ESPHome for local MQTT control.
• DIN-rail friendly form factor for mounting inside distribution boxes.

Provides low-cost energy metering for appliances when a mains wiring solution is acceptable.

Flash custom firmware (Tasmota/ESPHome) and configure MQTT topics for switching and telemetry.