Shelly Plus 1PM UL

Device identification

• Device name: Shelly 1 Gen4
• Device model: S4SW-001X16EU
• Device SSID: Shelly1G4-XXXXXXXXXXXX
• Device Bluetooth ID: 0x1028

Short description

Shelly 1 Gen4 is a small form factor smart switch with potential-free contacts, which allows remote control of electric appliances through a mobile phone, tablet, PC, or home automation system. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services.

Shelly 1 Gen4 can be accessed, controlled and monitored remotely from any place where the User has internet connectivity, as long as the device is connected to a Wi-Fi router and the Internet.

It can be retrofitted into standard electrical wall boxes, behind power sockets and light switches or other places with limited space.

Shelly 1 Gen4 has embedded Web Interface, which can be used to monitor and control the device, as well as adjust its settings.

The device has multi-protocol wireless MCU which provides Zigbee and Bluetooth connectivity, ensuring a secure connection.

This device is compatible with Matter.

Main features

• Wi-Fi Connectivity: The device can connect to your home Wi-Fi network, allowing you to remotely monitor humidity and temperature data through a smartphone app or other compatible devices.
• Integration with Smart Home Platforms: You can integrate the Shelly 1 Gen4 with popular smart home platforms, including Google, Alexa, and Samsung SmartThings. This enables voice control and automation capabilities through these platforms.
• Local and Cloud Control: Can function independently in a local Wi-Fi network and can also be operated through cloud home automation services.
• Bluetooth Connectivity: Bluetooth and BLE gateways are available for inclusion purposes, which may be useful during the setup process.
• Zigbee Connectivity: Zigbee is available for inclusion purposes, which may be useful during the setup process.
• User-Friendly Interface: The device provides a user-friendly interface with a reset button for manual interactions.
• Improved Processor: Upgraded with an improved processor and support for Zigbee connectivity.
• Embedded Web Interface: Features an embedded web interface for monitoring, control, and adjustment of settings.
• Wireless Connectivity: The device supports Wi-Fi (802.11 b/g/n/ax) and Bluetooth 5.0 protocols with specified indoor and outdoor range capabilities.
• Dry Contact: Allows switching on and off of lower voltage devices.
• BLE Gateway: Bridge between your Shelly BLU devices and the wider Shelly ecosystem. It receives Bluetooth signals and sends them to the cloud or locally to another non-Bluetooth device.
• Wi-Fi Range extender for IoT devices: A Wi-Fi extender is employed to expand the reach of your Wi-Fi network by receiving your current Wi-Fi signal, enhancing its strength, and then transmitting the enhanced signal over a wider area.
• Zigbee Range extender for IoT devices: A Zigbee extender is employed to expand the reach of your Zigbee network by receiving your Zigbee signal, enhancing its strength, and then transmitting the enhanced signal over a wider area.
• Scripting: https://shelly-api-docs.shelly.cloud/gen2/Scripts/ShellyScriptLanguageFeatures/
• Wide range of integrations: The device can be integrated with 3rd party home systems, documented HTTP API, MQTT(s), Web Hooks over HTTP and HTTPS, UDP
• Schedules: Allows scheduling of complex operations to be executed in predefined time window. Users can specify time windows based on date, time of day, weekdays, hours, minutes and seconds.
• Virtual Components: https://shelly-api-docs.shelly.cloud/gen2/DynamicComponents/Virtual/
• KNX net/IP support: https://shelly-api-docs.shelly.cloud/gen2/Integrations/KNX/

Use cases

• Remote Appliance Control: Turn on or off electric appliances remotely using your mobile phone, tablet, PC, or home automation system.
• Internet-Connected Convenience: Access аnd control devices from anywhere with internet connectivity, as long as the Shelly 1 Gen4 is connected to a Wi-Fi router.
• Home Automation: Shelly 1 Gen4 enables automatic control of power appliances for more relaxing and enjoyable experience.

🏠 Home Automation Use Cases

1. Light Control

• Remote control of standard lights (LED, incandescent, halogen).
• Set timers or schedules for lights (e.g., porch lights on at sunset).
• Use with motion sensors (for example Shelly BLU Motion) for occupancy-based lighting.

2. Garage Door Automation

• Act as a smart trigger to open/close garage doors.
• Monitor door status with a sensor input i.e using Shelly Plus Add-on.
• Integrate with voice assistants for hands-free control.

3. Fan or Ventilation Control

• Automate bathroom or kitchen fans based on humidity sensors (like Shelly BLU H&T).
• Turn on ventilation during specific times of day or based on occupancy.

4. Heater or Towel Rail Switching

• Control electric towel warmers or heaters (Max. switching current: 16A).
• Schedule operation or link to temperature thresholds via sensors (like Shelly BLU H&T).

🏢 Commercial Applications

1. Lighting Automation in Small Offices or Shops

• Control light zones based on business hours.
• Use with motion detectors (for example Shelly BLU Motion) for energy savings.

2. Meeting Room Occupancy

• Enable or disable equipment like projectors depending on occupancy.

3. Security and Access Systems

• Remotely unlock gates or doors for deliveries.
• Monitor open/close state of access points.

🏭 Industrial/Utility Use Cases

1. Equipment Monitoring & Control

• Power cycling routers, modems, or network switches.

2. Pump or Motor Control

• Automate irrigation pumps in greenhouses or fields (Max. switching current: 16A).
• Remotely control or valves (i.e. Shelly Add-On Mechanical Manipulator).

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

Amazon Alexa supported capabilities

Yes

Google Smart Home supported traits

Yes

Samsung SmartThings supported capabilities

Yes

Device electrical interfaces

Inputs

• 1 switch/button input on screw terminal
• 1 potential-free contacts relay input on screw terminal
• 2 power supply inputs on screw terminals: N and L

Outputs

• 1 potential-free contacts relay output on screw terminal

Connectivity

• Wi-Fi
• Bluetooth
• Zigbee

Safety function

• Overheating protection

Supported load types

• Resistive (incandescent bulbs, heating appliances)
• Capacitive (capacitor banks, electronic equipment, motor starting capacitors)
• Inductive with RC Snubber (LED light drivers, transformers, fans, refrigerators, air-conditioners, washing machines, tumble dryers)

User interface

Inputs

• One (Control) button

Outputs

• LED (monocolor) indication

The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.

Physical

Size (HxWxD): 37×42×16 mm ±0.5 / 1.46×1.65×0.63 in ±0.02

Weight: 27 g / 0.95 oz

Mounting: Wall console

Screw terminals torque: 0.4 Nm (3.5 lbf·in)

Conductor size: 0.5–1.5 mm² (20–16 AWG)

Strip length: 5–6 mm (0.20–0.24 in)

Shell material: Plastic

Color: Red

Environmental

Ambient temperature: −20 °C to 40 °C (−5 °F to 105 °F)

Humidity: 30–70 % RH

Max altitude: 2000 m (6562 ft)

Electrical

Power supply: 110–240 V~ / 24–30 V⎓

Power consumption: < 1.2 W

Output ratings

Max switching voltage AC: 240 V~

Max switching voltage DC: 30 V⎓

Max switching current AC: 16 A

Max switching current DC: 10 A

Sensors & Meters

Internal temperature sensor: Yes

Voltmeter (AC): Yes

Ammeter (AC): Yes

Radio

RF band: 2400–2495 MHz

Max RF power: < 20 dBm

Wi-Fi protocol: 802.11 b/g/n

Wi-Fi range: Up to 30 m / 100 ft indoors; 50 m / 160 ft outdoors (depends on conditions)

Bluetooth protocol: 4.2

Bluetooth range: Up to 10 m / 33 ft indoors; 30 m / 100 ft outdoors (depends on conditions)

MCU

CPU: ESP32-U4WDH

Flash: 4 MB

Firmware capabilities

Schedules: 20

Webhooks: 20 (up to 5 URLs each)

Scripting: Yes

MQTT: Yes

CoAP: No