Shelly 2L Gen3
No neutral needed · Bypass included · Electrician install
In stock · Ships in 1 to 2 business days
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2 lights, 2 switches, and only room for 1 device?
In switch mode the Shelly 2L Gen3 runs 2 independent circuits, each with its own wall switch on its own input. 1 device does the work of 2. Diagram: Shelly.
2 push-buttons, no neutral?
Both Shelly 2L Gen3 inputs in button mode, no neutral needed: each short press toggles its own light. Diagram: Shelly.
Single circuit, no neutral, spare channel for later?
The Shelly 2L Gen3 wired as a single no-neutral switch, with the second channel free for a second light when the owner wants it. Diagram: Shelly.
Key features
No neutral required: powers from the live wire only; suits loop-at-the-light Australian wiring.
Bypass in the box: keeps low-wattage LEDs stable; controls lamps above 5 W without flicker.
2 channels: 2 lighting circuits from 1 module behind the existing plate.
Keeps your switches: wall switches work as normal, with or without Wi-Fi.
Know the limits: 200 W on channel 1, 700 W on channel 2; lighting loads only.
Works with
Google Home
Amazon Alexa
Samsung SmartThings
Home Assistant
Shelly Smart Control app
MQTT
KNX
About this product
Most Australian homes wired before the last decade have no neutral at the light switch, because the wiring loops at the fitting. That rules out most smart relays without pulling a new neutral. The Shelly 2L Gen3 is built for exactly this: it powers itself from the live wire alone and switches 2 lighting channels from behind the existing plate.
The included Shelly Bypass fits in parallel with the load on the first channel to keep low-wattage LEDs stable, with it in place the 2L controls LED lamps above 5 W without flicker. Channel 1 is rated to 200 W and channel 2 to 700 W, which covers typical lighting circuits comfortably.
Like the rest of Gen3 it needs no hub, works locally through its built-in web page, and supports schedules, scenes and MQTT. For the retrofit quote where "there's no neutral" would otherwise kill the job, this is the module.
Model: S3SW-0A2X4EUL
230 V wiring behind the switch plate: licensed electrician required; no-neutral design, but the Bypass must go in at the first channel's load.
Tech specs
Physical
| Model | S3SW-0A2X4EUL |
| Dimensions | 37 × 42 × 16 mm |
| Weight | 26 g |
Electrical
| Max load | 200 W (O1) / 700 W (O2); A rating not stated by Shelly |
| Min load | 5 W (bypass included; needed below this) |
| Power monitoring | No |
| Operating temperature | −20 to 40 °C |
Connectivity
| Wi-Fi | 802.11 b/g/n |
| Bluetooth | 4.2 |
| Matter | Matter-ready (can be added by firmware update) |
Compatibility
| Compatibility notes | No-neutral device: powers from live wire only; Shelly Bypass (included) required to keep low-wattage LEDs (under 5 W) stable on channel 1.; Shelly Bypass for 1L/2L included in box: no separate purchase needed. |
In the box
| What's in the box | Device + Shelly Bypass included |
Warranty
| Manufacturer warranty | 3 Years |
| Free Ohmly extension | +1 Year Free Ohmly Warranty |
