SONOFF 4CH Pro R3 4-Way WiFi Smart Switch with 433 MHz RF Receiver, Self-Locking/Interlocking Modes

💡 General Description: Sonoff 4CH PRO R3 — 4-way WiFi smart switch with 433 MHz RF receiver. Ideal for automating your smart home: turn 4 devices on/off independently from your smartphone, an RF remote control, or via voice (Alexa, Google Home, Nest). Perfect for demanding DIY enthusiasts. 📐 Technical Specifications: Power Supply: 90–250 V~ AC; Max. Current: 10 A per channel / 16 A total; Max. Power 2200 W per channel / 3500 W total. WiFi frequency: 2.4 GHz (802.11 b/g/n). Radio control: integrated 433 MHz receiver. Material: V0 flame-retardant ABS. Dimensions: 145 × 90 × 34 mm. Mounting: DIN rail (industrial standard). Contents: 1 × Sonoff 4CH PRO R3 + 1 × instruction manual. 🔧 Installation: Ultra-simple DIN rail mounting. Standard electrical connection (L/N) — no advanced skills required. WiFi setup in less than 2 minutes via the free eWeLink app (iOS/Android). ⚡ Operation: Control each channel separately: *hold*, *pulse*, or *interlock* mode. Program up to 8 tasks (single timer, repeat, or countdown). Control remotely or via RF remote control (sold separately). Compatible with voice assistants — comfort and total control every day. ℹ️ Other information: Designed by ITEAD for professional reliability. Enhanced security (WPA/WPA2-PSK). Operating temperature: 0–40 °C. Humidity: 5–90% (non-condensing). Universal device — compatible with all your standard household electrical equipment.