- You cannot add that amount of "Sonoff 4CH PRO (R3) WiFi + RF smart relay switch with 4 channels, NO/NC and dry contact support" to the cart because there is not enough stock (0 remaining).
No Power Metering
WiFi
Neutral Required
RF 433MHzWiFiNeutral Required
RF 433MHzWiFiNeutral Required
RF 433MHzWiFiNeutral Required
RF 433MHzWiFiNeutral Required
No Power MeteringWiFiNeutral Required
