Shelly Presence Gen4 White

Device identification

• Device name: Shelly Presence Gen4

• Device model: S4SN-0U61X

• Device SSID: ShellyPresence-XXXXXXXXXXXX

• BLE ID: 0x1821

ATTENTION!
For safe and reliable operation, use a dedicated, high-quality power adapter that maintains a stable 5 V output. Avoid multi-port chargers, charging stations, and fast-charging adapters whose output may fluctuate when other connected devices are plugged in or removed, as this may damage the device.

Short description

Shelly Presence Gen4 is a presence sensor that uses mmWave radar to reliably detect people, even when they are sitting still. It enables more natural room automation by sensing actual presence rather than just motion.

It is designed for precise, room-aware automations with customizable detection behavior for both real rooms and open spaces. With up to 10 customized zones, you can tailor how the sensor reacts in different areas and fine-tune it to match your layout.

Shelly Presence Gen4 connects via Wi-Fi 6, Bluetooth 5 LE, and Zigbee 3.0, and it supports Matter-over-Wi-Fi. It integrates with Shelly Cloud, Home Assistant, and other popular platforms. You can also manage and monitor it through its own Embedded Web interface.

Main features

• Identifies up to 6 separate people simultaneously for realistic multi-occupant automations

• Supports up to 10 customized detection zones for more precise, area-specific automations

• Covers up to 42 m² to handle larger rooms and open areas

• Visualizes detected people on a map for clear, real-time understanding of the space

• Allows configurable transmission power and sensitivity, including advanced fine-tuning controls

• Provides filtering options to ignore near-ground movement and to avoid detecting small objects such as pets or robot vacuum cleaners

• Built-in light sensor that reports dark, twilight, and bright states for lighting-aware automations

• Operates via USB‑C (5 V) for continuous power

• Connects via Wi-Fi 6, Bluetooth 5 LE, and Zigbee 3.0, with Matter-over-Wi-Fi support

• Integrates with Shelly Cloud, Home Assistant, and other popular platforms

• Built-in Embedded Web interface for direct device access and configuration

Use cases

• Hands-Free Room Automation
  Enter a room and let Shelly Presence Gen4 instantly trigger the lights, AC, or music - no need for switches or voice commands.

• Zone-Based Smart Lighting
  Use multi-zone detection to light only the areas in use - perfect for large rooms, studios, or open-plan homes.

• Energy Efficiency in Empty Spaces
  Automatically turn off appliances and lights when no one is present, helping reduce energy costs and waste.

• Ambient Light-Aware Scenes
  Trigger different scenes based on light levels - like activating soft lighting during twilight or full brightness when it’s dark.

• True Presence Detection in Quiet Settings
  Ideal for bedrooms, offices, or meeting rooms where people remain still - detects presence even without motion.

• Privacy-Friendly Occupancy Awareness
  Monitor when and where people are present without using cameras - ideal for sensitive spaces like restrooms, bedrooms, or offices.

• Pet-Friendly Setup
  Avoid false triggers from pets or robot vacuums by adjusting the detection sensitivity to match only human movement.

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

• Motion Sensor

Google Smart Home supported traits

• Occupancy Sensing

Samsung SmartThings supported capabilities

• Presence Sensor

Connectivity

• Wi-Fi

• Bluetooth

• Zigbee

• Matter

User interface

Inputs

• Button

  • Press 1 time: Checks device status and triggers the LED to display the current connection state.

  • Press 3 times rapidly: Enters Zigbee pairing mode, allowing the device to connect to a Zigbee network.

  • Press 5 times rapidly: Switches the device from Matter firmware (default) to Zigbee, or back.

  • Press and hold for 5 seconds: Performs a network reset. The LED flashes . If no action is taken within 3 minutes, the device retains its existing settings.

  • Press and hold for 10 seconds: Resets the device to factory settings.

Outputs

• LED indication

  • Blue light (slow flashing): Device is in AP mode.

  • Red light (slow flashing): STA mode is active, but the device is not connected to a Wi-Fi network.

  • Yellow light (slow flashing): STA mode is active, and the device is connected to a Wi-Fi network but not connected to the Shelly Cloud, or the Shelly Cloud is disabled.

  • Green light (slow flashing): STA mode is active, and the device is connected to both a Wi-Fi network and the Shelly Cloud.

  • White light (slow flashing): Presence is detected.

  • Purple light (slow flashing): Device is connected to a Zigbee network.

  • Flashing Purple light: Device is in Zigbee pairing mode.

  • Flashing Yellow light: Device is in identification mode, signaling its presence for user identification.

  • Flashing Red/Blue light: OTA update is in progress.

What are the differences between the different generations of Shelly products?

Each new generation adds more power, memory, and features:

Gen 1 offers basic control;

Gen 2 (Plus Series, Mini Series, Pro Series) adds Bluetooth, scripting, and better security;

Gen 3 improves performance, adds Matter (starting from firmware version 1.6.0 or newer) and advanced monitoring;

Gen 4 offers multi-protocol connectivity, featuring Wi-Fi 6, Bluetooth, Zigbee, and Matter.

Can I control the device via Bluetooth?

No, the protocol is used only for device inclusion, allowing for quick and easy setup through the Shelly Smart Control app.

For bluetooth control it is required to have another Bluetooth device such as Shelly BLU Button or Shelly BLU Motion to interact.

Additionally, Shelly devices can function as a BLE gateway, bridging Shelly BLU devices to your Wi-Fi network.

Is it possible to use the device without a hub?

Yes, Shelly devices (except for Wave devices) operate independently without the need for a hub. They connect directly to your Wi-Fi network, and you can control them via the Shelly Smart Control app, web interface, or through integrations with platforms like Google Home, Alexa, Home Assistant and Samsung SmartThings.