Wi‑Fi Smart Dual Relay Switch Sonoff DUAL R3 LITE — 2-channel, 230V, 2×1650W

The Sonoff DUAL R3 LITE is a Wi‑Fi smart dual relay switch with two independent channels for 100–240V AC circuits. It supports remote control, scheduling and local control for lights, small appliances and motorized facilities such as tubular motors for curtains, blinds, roller shutters and awnings. The module is TUV-certified and designed for in-wall or DIN‑rail installation, offering compact dimensions and a PC V0 casing.

Advantages

DUAL R3 LITE provides two separate relay channels that enable independent control of two loads, plus two-way control for lighting from different physical switches. It supports scheduling, voice control via Amazon Alexa and Google Assistant, and integration with other Sonoff devices for automated scenes. The unit accepts a wide AC input range, supports motor and resistive loads within specified limits, and can be mounted in-wall or on a 35 mm DIN rail using a detachable base.

Suitable for

• Motorized curtains, blinds and roller shutters
• Two-zone lighting control in homes and offices
• Small AC appliances and scheduled on/off tasks
• Integration in smart scenes with other Sonoff devices

Key specifications

• Wi‑Fi: IEEE 802.11 b/g/n, 2.4 GHz
• Input voltage: 100–240 V AC, 50/60 Hz
• Output voltage: 100–240 V AC, 50/60 Hz
• Resistive load per channel: 2200 W / 10 A (note: product listing rated per channel 1650 W for 230 V systems)
• Total resistive load: 3300 W / 15 A
• Motor load: 10–240 W / 1 A
• DIN‑rail mounting: compatible with 35 mm rails (detachable base)
• Casing material: PC V0
• Operating temperature: -10 °C to +40 °C
• Dimensions: 54 mm × 49 mm × 24 mm

How to use

Install the DUAL R3 LITE in-line with the AC supply and the two loads following appropriate wiring diagrams for motor or switch modes; use the detachable base if DIN‑rail mounting is required. Pair the device with the eWeLink app over a 2.4 GHz Wi‑Fi network to enable remote control, scheduling and scene creation. Configure two-way physical switch wiring where needed to retain manual control alongside app control. When using with motorized curtains or blinds, select the motor mode in the app and set travel limits or percentage openings as supported.

Usage recommendations

Use within specified voltage and load limits and ensure wiring is performed by a qualified electrician. For reliable Wi‑Fi connection, use a 2.4 GHz network and place the router within adequate range. When controlling motors, confirm compatibility with tubular motors and set appropriate travel or time parameters to prevent overrun.