The SONOFF DUALR3 Dual Relay Smart Switch is a two-channel Wi-Fi module that fits behind your wall switch and enables full smart control, real-time energy monitoring, and two-way wall-switch compatibility. Whether driving lights, fans, curtains, or appliances, it supports app, voice, and manual switch control with high flexibility.
Key features
Channels: Dual-relay control — two independent outputs for separate appliances or loads.
Max load (resistive): 2200 W / 10 A per gang, 3300 W / 15 A total.
Modes: Switch mode (standard), Motor mode (for blinds/curtains), Meter mode (real-time power/voltage/current monitoring) — Note: Meter mode only for DUALR3, not Lite version.
Two-way wall switch support: Compatible with rocker, momentary, SPDT switches for manual physical control alongside app/voice.
Connectivity: Wi-Fi 802.11 b/g/n (2.4 GHz) for remote control via the eWeLink app; voice control with Alexa & Google Assistant.
Dimensions: 54 × 49 × 24 mm — compact for hidden installation.
Material & environment: Fire-retardant PC V0 housing; operating temperature -10 °C to 40 °C.
Use cases: Ideal for managing dual circuits (e.g., living room lights + curtains), motorized blinds, or appliances where power monitoring is required.
