Shelly SW 12V Smart Relay Switch
Legend
Device terminals
- O: Load circuit output terminal
- I: Load circuit input terminal
- SW: Switch input terminal (controlling O)
- +12V: 12 V
positive terminal. - L: Live terminal (110-240 V~)
- N: Neutral terminal
- +: 24-48 V Positive terminal
: Negative terminal
Wires
- L: Live wire (110-240 V~).
- N: Neutral wire
- +: 12/24-48 V positive wire
- GND: Ground wire 12/24-48 V
User and safety guide Shelly 1 Gen3
- Smart switch with potential-free contacts
Safety information
For safe and proper use, read this guide, and any other documents accompanying this product. Keep them for future reference.
Failure to follow the installation procedures can lead to malfunction, danger to health and life, violation of law, and/or refusal of legal and commercial guarantees (if any).
Shelly Europe Ltd. is not responsible for any loss or damage in case of incorrect installation or improper operation of this device due to failure to follow the user and safety instructions in this quide.
- This sign indicates safety information.
- This sign indicates an important note.
- WARNING! Risk of electric shock. Installation of the Device to the power grid must be performed carefully by a qualified electrician.
- WARNING! Before installing the Device, turn the circuit breakers off. Use a suitable test device to make sure there is no voltage on the wires you want to connect. When you are sure that there is no voltage, proceed to the installation.
- WARNING! Before making any changes to the connections, ensure there is no voltage present at the Device terminals.
- CAUTION! Connect the Device only to a power grid and appliances that comply with all applicable regulations. A short circuit in the power grid or any appliance connected to the Device can cause fire, property damage, and electric shock.
- CAUTION! The Device may be connected to and control only electric circuits and appliances that comply with the applicable standards and safety norms.
- CAUTION! Do not connect the Device to appliances that exceed the specified maximum electric load.
- CAUTION! Connect the Device only in the way shown in these instructions. Any other method could cause damage and/or injury.
- CAUTION! The Device and the appliances connected to it must be secured by a cable protection switch under EN60898-1 (tripping characteristic B or C, max. 16A rated current, min. 6 kA interrupting rating, energy limiting class 3).
- CAUTION! Do not use the Device if it shows any sign of damage or defect.
- CAUTION! Do not attempt to repair the Device yourself.
- CAUTION! The Device is intended only for indoor use.
- CAUTION! Keep the Device away from dirt and moisture.
- CAUTION! Do not allow children to play with the buttons/switches connected to the Device. Keep the devices (mobile phones, tablets, PCs) for remote control of Shelly away from children.
Product Description
Shelly 1 Gen3 (the Device) is a smart switch with potential-free contacts. It operates on both, AC and DC power. Its small form factor allows retrofitting into standard electrical wall boxes, behind power sockets, light switches, or other places with limited space. The Device has an embedded web interface used to monitor, control, and adjust the Device. The web interface is accessible at http://192.168.33.1 when connected directly to the Device access point or at its IP ad- dress when you and the Device are connect- ed to the same network.
The Device can access and interact with other smart devices or automation systems if they are in the same network infrastructure. Shelly Europe Ltd. provides APLs for the devices, their integration, and cloud control. For more information, visit https://shelly-api-docs.shelly.cloud. The Device comes with factory-installed firmware. To keep it updated and secure, Shelly Europe Ltd. provides the latest firmware updates free of charge. Access the updates through either the embedded web interface or the Shelly Smart Control mobile application. Installation of firmware updates is the user’s responsibility. Shelly Europe Ltd. shall not be liable for any lack of conformity of the Device caused by the failure of the user to install the available updates on time.
Installation instructions
- To connect the Device, we recommend using solid single-core wires or stranded wires with ferrules. The wires should have insulation with increased heat resistance, not less than PVC T105°C (221 °F).
- Do not use buttons or switches with built-in LED or neon glow lamps.
- When connecting wires to the Device terminals, consider the specified conductor cross-section and stripped length. Do not connect multiple wires to a single terminal.
- For security reasons, after you successfully connect the Device to the local Wi-Fi network, we recommend that you disable or password-protect the Device AP (Access Point).
- To perform a factory reset of the Device, press and hold the Control button for 10 seconds.
- To enable the access point and the Bluetooth connection of the Device, press and hold the Control button for 5 seconds.
Connect the load circuit to the I and O terminals of the Device.
If you are using a 110-240 V~ power supply (Fig. 1):
- Connect the Live wire to the L terminal and the Neutral wire to the N terminal.
- Connect the switch to the SW terminal of the Device and the Live wire.
If you are using a 24-48 V power supply (Fig. 2):
The voltage on the I and O terminals of the Device should not exceed 30 V.
- Connect the + wire to the + terminal and the GND wire to the terminal.
- Connect the switch to the SW terminal and the GND wire.
If you are using a stabilized 12 V power supply (Fig. 3):
Complete the previous two steps. Instead of connecting the 12V+ to the + terminal, connect it to the 12V terminal.
Specifications
Physical
- Size (HxWxD): 37x42x16 mm / 1.46×1.65×0.63 in
- Weight: 26 g / 0.92 oz
- Screw terminals max torque: 0.4 Nm / 3.5 Ibin
- Conductor cross section: 0.2 to 2.5 mm? / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
- Conductor stripped length: 6 to 7 mm / 0.24 to 0.28 in
- Mounting: Wall console / In-wall box
- Shell material: Plastic
- Shell color: Blue
Environmental
- Ambient working 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:
- 110-240 V~
- 24-48 V
- 12 V
- Power consumption: < 1.2 W
Output circuits ratings
- Max. switching voltage:
- 240 V~
- 30 V
- Max. switching current:
- 16 A (240 V~)
- 10 A (30 V)
Sensors, meters
- Internal-temperature sensor: Yes
Radio Wi-Fi
- Protocol: 802.11 b/g/n
- RF band: 2401 – 2483 MHz
- Max. RF power: < 20 dBm
- Range: Up to 50 m / 165 ft outdoors, up to 30 m / 99 ft indoors (depending on local conditions)
Bluetooth
- Protocol: 4.2
- RF band: 2400 – 2483.5 MHz
- Max. RF power: <4 dBm
- Range: Up to 30 m / 100 ft outdoors, up to 10 m / 33 ft indoors (depending on local conditions)
Microcontroller unit
- CPU: ESP-Shelly-C38F
- Flash: 8 MB
Firmware capabilities
- Schedules: 20
- Webhooks (URL actions): 20 with 5 URLs per hook
- Wi-Fi range extender: Yes
- BLE Gateway: Yes
- Scripting: Yes
- MQTT: Yes
- Encryption: Yes
Shelly Cloud inclusion
The Device can be monitored, controlled, and set up through our Shelly Cloud home automation service. You can use the service through either our Android, iOS, or Harmony OS mobile application or through any internet browser at https://control.shelly.cloud/.
If you choose to use the Device with the application and Shelly Cloud service, you can find instructions on how to connect the Device to the Cloud and control it from the Shelly app in the application guide: https://shelly.link/app-guide. The Shelly mobile application and Shelly Cloud service are not conditions for the Device to function properly. This Device can be used standalone or with various other home automation platforms.
Troubleshooting
- In case you encounter problems with the installation or operation of the Device, check its knowledge base page: https://shelly.link/1_Gen3
Declaration of Conformity
Hereby, Shelly Europe Ltd. declares that the radio equipment type Shelly 1 Gen3 complies with Directive 2014/53/EU, 2014/35/EU, 2014/30/EU, 2011/65/EU. The full text of the EU Declaration of Conformity is available at the following internet address: https://shelly.link/1_Gen3_DoC.
CONTACT
- Manufacturer: Shelly Europe Ltd.
- Address: 103 Cherni vrah Blvd., 1407 Sofia, Bulgaria
- Tel.: +359 2 988 7435
- E-mail: support@shelly.cloud Official website: https://www.shelly.com Changes in contact information are published by the Manufacturer on the official website.
- All rights to the trademark Shelly® and other intellectual rights associated with this Device belong to Shelly Europe Ltd.
Documents / Resources
 | Shelly SW 12V Smart Relay Switch [pdf] User Guide SW 12V Smart Relay Switch, SW 12V, Smart Relay Switch, Relay Switch, Switch |