Shelly Presence Gen4 | mmWave presence sensor with Wi-Fi, Zigbee, and Matter

Detect presence, not just motion

A standard motion sensor switches off the light as soon as you sit still. The Shelly Presence Gen4 does not. Using mmWave radar, it detects presence based on minimal movements such as breathing, even when someone is sitting still behind a desk or on the couch. This makes it suitable for lighting, heating, and security scenarios where a regular PIR sensor falls short.

Power and connectivity

The sensor is powered via USB-C (5V DC, max. 1A). There are no batteries; the sensor requires a fixed USB power supply. Wireless protocols: WiFi 802.11 b/g/n/ax (2.4 GHz, WiFi 6), Bluetooth 5 LE, and Zigbee 3.0. Matter support is available via WiFi. The sensor has a built-in light meter (dark / dim / bright) which can be used as an additional condition in automations.

Functionality and settings

The Shelly Presence Gen4 tracks up to 6 people simultaneously and supports up to 10 configurable detection zones. For each zone, you can set the sensitivity, range, and behavior, which is useful in open spaces or rooms with pets. Fall detection is built-in and can be used for safety alerts. The detection sensitivity is adjustable so that small movements of pets can be filtered out.

All settings are accessible via the built-in web interface, the Shelly Smart Control app, or directly via Home Assistant. OTA firmware updates are automatic.

Placement and mounting

The sensor comes with an adjustable stand for freestanding placement on a table or shelf. Wall mounting is possible via the included bracket. The sensor is available in white and black, making it unobtrusive in most interiors. Combine it with a Shelly switch module for full local presence-based lighting, or with another presence sensor for redundant detection in large spaces.

Home Assistant

In WiFi/Matter mode, you connect the sensor via the official Shelly integration in Home Assistant for local, cloud-independent control. In Zigbee mode, you use a Zigbee coordinator and connect via ZHA or Zigbee2MQTT.

Pairing procedure (WiFi/Shelly integration)

1. Connect the sensor via USB-C and wait until the LED flashes.
2. Connect your phone or PC to the WiFi access point ShellyPresenceG4-XXXXXXXXXXXX.
3. Set up your home network via the web interface or Shelly Smart Control app.
4. Home Assistant will automatically detect the device (Settings > Devices & services).
5. Confirm the pairing and name the device.

Pairing procedure (Zigbee mode)

1. Open the Shelly Smart Control app and navigate to the device.
2. Switch to Zigbee firmware via Settings > Firmware Mode.
3. Start pairing mode from the app or via the reset button (see included manual).
4. Open Zigbee2MQTT or ZHA and start adding a device.
5. The device will appear as Shelly Presence Gen4.

Entities after pairing (WiFi integration)

• binary_sensor.presenceg4_occupancy (presence on/off)
• binary_sensor.presenceg4_motion (motion detection)
• sensor.presenceg4_illuminance (illuminance: dark / dim / bright)
• sensor.presenceg4_distance (distance to nearest person in cm)
• sensor.presenceg4_temperature (internal)

Local control confirmed via WiFi (RPC) and Zigbee. Shelly Cloud is optional.

Homey

Support via the Shelly Control app on Homey Pro is under development and will be rolled out soon. Matter pairing is already available on Homey Pro. Check the current app changelog for definitive availability.

Other platforms

• Amazon Alexa: yes, via Shelly Cloud or Matter
• Google Home: yes, via Shelly Cloud or Matter
• Apple HomeKit: yes, via Matter (Matter controller required)
• Samsung SmartThings: yes
• Jeedom: yes

Automation examples

Example 1 – Lights on when present, off when leaving

1. Trigger: binary_sensor.presenceg4_occupancy becomes on.
2. Condition: sensor.presenceg4_illuminance is dark or dim.
3. Action: switch on ceiling light via linked switch module.
4. Trigger 2: binary_sensor.presenceg4_occupancy is off for at least 3 minutes.
5. Action 2: switch off ceiling light.

Example 2 – Fall detection with instant notification

1. Trigger: fall detection entity of the Presence Gen4 becomes on.
2. Condition: time between 22:00 and 08:00.
3. Action 1: switch on all lights in the room immediately.
4. Action 2: send push notification via HA Companion app: “Fall detected in bedroom”.
5. Action 3: optionally send an SMS or call a contact person via a notification service.

⚠️ Important points

• Requires a fixed USB-C power supply (5V DC, max. 1A); no battery operation.
• WiFi/Matter and Zigbee are not active simultaneously; choose one mode.
• Fall detection is a supplementary function; not intended as a medical device.
• Maximum range and zone behavior depend on placement and room layout.
• Not suitable for outdoor use.
• USB power supply and cable are not included.

Box contents

• 1x Shelly Presence Gen4 (white or black)
• 1x Adjustable stand / wall bracket
• 1x Multilingual user manual

Compatibility

Home Assistant (Shelly integration, ZHA, Zigbee2MQTT, Matter) | Homey Pro (coming soon) | Apple HomeKit (Matter) | Amazon Alexa | Google Home | Samsung SmartThings | Jeedom

Only illuminate when needed. Connect the Shelly Presence Gen4 to Home Assistant and let your lighting and heating react to actual presence, not assumptions.

Technical specifications

• Detection technology: mmWave radar
• Protocol: WiFi 802.11 b/g/n/ax (2.4 GHz, WiFi 6), Bluetooth 5 LE, Zigbee 3.0, Matter
• Power supply: USB-C, 5V DC, max. 1A
• Self-consumption: < 1W
• Max. number of people: 6 simultaneously
• Detection zones: up to 10 configurable
• Fall detection: yes
• Built-in light meter: yes (dark / dim / bright)
• Distance measurement: yes (distance to nearest person)
• Sensitivity adjustment: yes, adjustable per zone
• Mounting: freestanding (adjustable stand) or wall mount (bracket)
• Color: white or black
• Operating temperature: -20 °C to +40 °C
• OTA updates: yes
• MQTT: yes
• Scripting: yes
• Battery: no
• USB power supply included: no
• Box contents: 1x Shelly Presence Gen4, stand/wall bracket, manual

Frequently asked questions

Do I need a hub to use the Shelly Presence Gen4?

Via WiFi, the sensor works standalone on your local network. Home Assistant connects directly via the Shelly integration without additional hardware. For Zigbee, you need a Zigbee coordinator. For Matter, a Matter-compatible controller is required.

What is the difference from a regular motion sensor?

A standard PIR sensor only detects motion. The Presence Gen4 uses mmWave radar and detects presence even when completely still, such as someone sitting motionless behind a desk. This prevents lights from turning off while the room is still occupied.

How do I connect the sensor to Home Assistant?

In WiFi mode, Home Assistant automatically detects the device via the Shelly integration (Settings > Devices & services). In Zigbee mode, you first switch to Zigbee firmware via the Shelly Smart Control app and then pair via ZHA or Zigbee2MQTT.

Does the sensor also work with Homey?

Support via the Shelly Control app for Homey Pro is under development. Matter pairing is already available on Homey Pro. Check the current app changelog for definitive availability.

Is the USB power supply included?

No. The sensor is powered via USB-C (5V DC, max. 1A) but a power adapter or cable is not included. Use a standard USB-C power supply of at least 1A.

Can the sensor ignore pets?

Yes. The detection sensitivity is adjustable per zone. By lowering the sensitivity or strategically setting up zones, the sensor filters out small movements from pets while still detecting human presence.

Is fall detection suitable as a medical device?

No. Fall detection is a supplementary function for smart automations and notifications. The sensor is not certified as a medical device and should not be used as a primary safety solution in medical or care situations.