So WiFi Smart Relay 4 Ch Dry

Sonoff 4CH PRO R3 Sonoff 4CH PRO R3 is Sonoff?s premium 4-channel smart switch relay, released in July 2020. Equipped with both WiFi and 433MHz RF receiver, it is both remotely contollable via Internet and smartphone, and locally by RF remote controller. Supports momentary switching, dry contact (voltage free) switching and interlock mode to support AC and DC motor operations.

$63.00