Shelly Presence Gen4 Smart mmWave Radar Sensor with Wi-Fi & Zigbee
Transform your smart home with the Shelly Presence Gen4, an advanced mmWave radar presence sensor that detects people even when sitting still. Unlike traditional motion sensors, this intelligent device senses actual presence rather than just movement, enabling more natural and reliable home automation. Perfect for smart lighting, HVAC control, energy management, and home security systems, the Presence Gen4 delivers precision detection for Australian homes and businesses.
Why You'll Love the Shelly Presence Gen4
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True Presence Detection: mmWave radar technology detects people even when they remain still or seated, preventing lights from switching off prematurely
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Multi-Person Tracking: Tracks up to 6 people simultaneously for realistic multi-occupant automations
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10 Customizable Zones: Configure up to 10 detection zones covering up to 42 m×, each with tailored automation rules for precise, area-specific control
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Multi-Protocol Connectivity: Connects via Wi-Fi 6, Bluetooth 5 LE, and Zigbee 3.0 with Matter-over-Wi-Fi support for seamless integration
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Built-in Light Sensor: Detects ambient light conditions and reports three distinct levels (dark, twilight, bright) for lighting-aware automations
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Adjustable Sensitivity: Configure settings to ignore movements from kids, pets, or robot vacuum cleaners and reduce false triggers
Advanced mmWave Radar Technology
The Shelly Presence Gen4 uses millimeter-wave radar technology to reliably detect people in spaces up to 8 × 8 m (26 × 26 ft). The sensor provides a 140-degree detection field and can visualize detected people on a real-time map for clear understanding of your space. With configurable transmission power and advanced fine-tuning controls, you can customize detection behavior for both enclosed rooms and open spaces.
Zone-Based Smart Automation
Create sophisticated automations with up to 10 customizable detection zones. Perfect for large rooms, open-plan living areas, studios, or commercial spaces, zone-based control allows you to light only the areas in use, adjust climate control based on occupancy, or trigger specific scenes when someone enters a particular zone. Link it with Shelly dimmers and switches for highly targeted lighting control.
Universal Smart Home Integration
The Presence Gen4 integrates seamlessly with Shelly Cloud, Home Assistant, Alexa, Google Home, and other popular smart home platforms. With support for Wi-Fi 6, Bluetooth 5 LE, Zigbee 3.0, and Matter-over-Wi-Fi, this sensor fits into virtually any smart home ecosystem. Manage and monitor the device through the Shelly Smart Control app or its own embedded web interface.
Flexible Installation Options
The Presence Gen4 comes with a free-standing base with built-in metal weight for desk, shelf, or tabletop placement. The mounting plate can be easily detached for wall installation using the included adhesive tape or screws. The compact design allows discreet installation in any room, with optimal installation height of 2 m (6.5 ft) and recommended tilt angle of approximately 15°.
Energy Efficiency & Automation Use Cases
Perfect for Australian homes and businesses looking to reduce energy consumption. Automatically turn off heating, cooling, and lighting in empty spaces. Create hands-free room automation that triggers lights, AC, or music when you enter. Implement zone-based smart lighting that illuminates only occupied areas. Ideal for home theatres, offices, classrooms, conference rooms, retail spaces, and energy-conscious homes.
What's in the Box
- Shelly Presence Gen4 sensor (Black)
- Free-standing base with built-in metal weight
- USB-A to USB-C power cable (1.5 m)
- Double-sided adhesive tape
- Mounting screws
- Quick start guide
Full Specifications
Detection & Sensing
| Technology |
mmWave radar |
| Detection Range |
Up to 8 × 8 m (26 × 26 ft) |
| Coverage Area |
Up to 42 m× |
| Detection Field |
140 degrees |
| Multi-Person Tracking |
Up to 6 people simultaneously |
| Detection Zones |
Up to 10 customizable zones |
| Maximum Room Height |
5 m (16.4 ft) |
| Optimal Installation Height |
2 m (6.5 ft) |
| Recommended Tilt Angle |
Approximately 15° |
| Built-in Light Sensor |
Yes (dark, twilight, bright levels) |
Connectivity
| Wi-Fi Protocol |
Wi-Fi 6 (802.11ax) |
| Wi-Fi Frequency Band |
2401 - 2483 MHz |
| Wi-Fi Max RF Power |
< 20 dBm |
| Bluetooth Protocol |
Bluetooth 5 LE |
| Bluetooth Frequency Band |
2402 - 2480 MHz |
| Bluetooth Max RF Power |
< 20 dBm |
| Bluetooth Range |
Up to 10 m indoors, 30 m outdoors |
| Zigbee Protocol |
Zigbee 3.0 (802.15.4) |
| Zigbee Frequency Band |
2405 - 2480 MHz |
| Zigbee Max RF Power |
< 20 dBm |
| Zigbee Range |
Up to 100 m indoors, 300 m outdoors |
| Matter Support |
Matter-over-Wi-Fi |
| Device SSID |
ShellyPresence-XXXXXXXXXXXX |
| BLE ID |
0x1821 |
Power
| Power Supply |
5 V DC via USB-C, 1 A |
| Power Consumption |
< 3.5 W |
| USB Cable Included |
Yes (USB-A to USB-C, 1.5 m) |
| Power Adapter Included |
No (sold separately) |
Physical Dimensions
| Size (H × W × D) without stand |
64 × 41 × 26 mm (2.49 × 1.59 × 1.02 in) |
| Size (H × W × D) with stand |
70 × 41 × 37 mm (2.73 × 1.59 × 1.43 in) |
| Weight without stand |
42 g (1.48 oz) |
| Weight with stand |
85 g (3.00 oz) |
| Color |
Black |
Environmental
| Operating Temperature |
-20°C to 40°C (-5°F to 105°F) |
| Humidity |
30% to 70% RH |
| Indoor Use |
Yes |
| Outdoor Use |
No |
Integration & Compatibility
| Compatible Platforms |
Shelly Cloud, Home Assistant, Alexa, Google Home, SmartThings, MQTT, and more |
| Control Methods |
Shelly Smart Control app, embedded web interface, voice control, API |
| Firmware Updates |
Over-the-air (OTA) updates |
| Mounting Options |
Free-standing base, wall mount (screws or adhesive) |
Warranty & Support
| Warranty Period |
3 years |
| Model Number |
S4SN-0U61X |
| Compliance |
CE, RoHS, Directive 2014/53/EU |
Specifications are sourced from the official manufacturer product page and may be updated.
