Device identification
- Device name: Shelly 1L
- Device model: SHSW-L
- Device SSID: shelly1l-XXXXXX
Short description
Shelly 1L is a compact smart switch designed to solve the challenge of automating light switches that operate without a Neutral wire. It only requires a live (hot) line, making it ideal for retrofitting into existing installations. The device enables remote control of connected appliances via smartphone, tablet, PC, or home automation systems. It can function standalone within a local Wi-Fi network or be managed through cloud-based home automation services.
You can access, control, and monitor Shelly 1L remotely from anywhere with internet connectivity, provided the device is connected to a Wi-Fi router and the Internet.
It fits into standard electrical wall boxes, behind power sockets, light switches, or other tight spaces.
Shelly 1L includes an embedded web interface for monitoring, controlling, and configuring the device.
Main applications
- Residential
- MDU (Multi Dwelling Units – apartments, condominiums, hotels, etc.)
- Light commercial (small office buildings, small retail/restaurant/gas station, etc.)
- Government/municipal
- University/college
Integrations
- Samsung SmartThings
- Alexa
Simplified internal schematics
Device electrical interfaces
Inputs
- 2 switch/button inputs on screw terminals
- 2 power supply inputs on screw terminals: N and L
Outputs
- 2 switch signal output on screw terminal
- Load output on screw terminal
Add-on interface
- Shelly proprietary serial interface
⚠ CAUTION! High voltage is present on the add-on interface when the device is powered!
Connectivity
- Wi-Fi
Safety features
- Overheating protection
Supported load types
(with and without Neutral)
- Resistive (incandescent bulbs, heating devices)
- Capacitive (capacitor banks, electronic equipment, motor start capacitors)
- Inductive with RC Snubber (LED light drivers, transformers, fans, refrigerators, air-conditioners)
User interface
Inputs
- One (Reset) button
- Press and hold for 5 seconds to enable device access point
- Press and hold for 10 seconds to factory reset the device
Specifications
| Type | Value |
|---|---|
| Physical | |
| Size (HxWxD): | 38×43×14 mm ±0.5 / 1.50×1.69×0.55 in ±0.02 |
| Weight: | — |
| Mounting: | Wall console |
| Screw terminals max torque: | 0.4 Nm / 3.5 lbin |
| Conductor cross section: | 0.5 to 1.5 mm² / 20 to 16 AWG |
| Conductor stripped length: | 5 to 6 mm / 0.20 to 0.24 in |
| Shell material: | Plastic |
| Color: | Cyan |
| Environmental | |
| Ambient temperature: | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity: | 30% to 70% RH |
| Max. altitude: | 2000 m / 6562 ft |
| Electrical | |
| Power supply AC: | 110–240 V, 50/60 Hz |
| Power supply DC: | No |
| Neutral not needed: | Yes |
| Min. load without neutral: | 20 W resistive load |
| Power consumption: | < 1 W |
| Output circuits ratings | |
| Max switching voltage AC: | 250 V |
| Max switching voltage DC: | N/A |
| Max switching current AC: | 4.1 A (5 A peak) |
| Max switching current DC: | N/A |
| Sensors, meters | |
| Internal-temperature sensor: | Yes |
| Radio | |
| RF band: | 2401–2495 MHz |
| Max. RF power: | <20 dBm |
| Wi-Fi protocol: | 802.11 b/g/n |
| Wi-Fi Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) |
| MCU | |
| CPU: | ESP8266 |
| Flash: | 2 MB |
| Firmware capabilities | |
| Schedules: | 18 |
| Webhooks (URL actions): | 10 with 5 URLs per hook |
| Scripting: | No |
| MQTT: | Yes |
| CoAP: | Yes |
Basic wiring diagrams
| With Neutral | Without Neutral |
|---|---|
 |  |
Legend
| Terminals | Description | Wires | Description |
|---|---|---|---|
| SW1 | Switch 1 input terminal | L | Live (110–240 VAC) wire |
| SW2 | Switch 2 input terminal | N | Neutral wire |
| Sx | Switch signal output terminal | — | — |
| N | Neutral terminal | — | — |
| L | Live (110–240 V) terminal | — | — |
| O | Load output terminal | — | — |
Troubleshooting
...
Web Interface guide
Read the Shelly 1L web interface guide
Components and APIs
Printed User Guide
Download printed user guide (English, Deutsch, Italiano, Español, Português, Français)
Compliance
Shelly 1L multilingual EU declaration of conformity
Installation guides
There are no items with the selected labels at this time.