S1 Pro Multi Sense Zigbee

Presence and environmental sensing without cameras or cloud dependency.
Wall-mounted Zigbee mmWave sensor tracking up to 3 targets.
One device gives a complete picture of your space.

Peace of Mind, Built In.

Understands space, not just motion.

mmWave Presence Sensing

Advanced mmWave radar continuously tracks presence for up to three people simultaneously, including their position, distance, and movement. This allows the system to understand where someone is in a room, not just that someone moved.

With support for three configurable detection zones and one exclusion zone, you can precisely control where presence should trigger automations, and where it should be ignored. Fast, continuous updates ensure detection feels instant, stable, and reliable, even when people move slowly or remain still.

Clear insight, right out of the box.

Air Quality Intelligence

Built-in air quality sensing continuously monitors eCO₂, VOCs, IAQ, and gas resistance, giving you real-time insight into the air you breathe. Changes in air quality are detected early, helping you respond before comfort or focus is affected.

For applications where absolute accuracy matters, an optional high-precision add-on enables true CO₂ measurements. This modular approach lets you start with meaningful air quality insight immediately and upgrade when needed.

Comfort, kept in balance.

Temperature & Humidity

Temperature and humidity are measured continuously to provide a clear picture of indoor comfort. These readings help identify conditions that feel too warm, too dry, or too humid often before you consciously notice them.

By understanding how temperature and humidity change throughout the day, automations can respond more intelligently, maintaining a stable and comfortable environment without constant manual adjustment.

Aware of light, indoors and out.

Light Sensing

Integrated light sensing measures ambient light levels (lux), allowing the system to understand real-world lighting conditions in and around your home. This goes beyond simple on/off detection.

Lighting automations can respond naturally to changing daylight and cloud cover, enabling smarter behavior for lighting, shading, and energy efficiency based on actual light levels, not fixed schedules.

Clear signals, when you need them.

Physical Feedback

A built-in LED and buzzer provide immediate visual and audible feedback, offering clear confirmation when something changes. Whether it’s presence detection, air quality alerts, or system status, feedback is always direct and unambiguous.

All feedback behavior is fully controlled through Home Assistant automations, giving you complete control over when, how, and if the device communicates from subtle indicators to clear alerts. A purple breathing LED indicates when the device is not connected to Zigbee.

Adapts to how and where you install it.

Modular by Design

Optional mounting add-ons enable flexible positioning. Choose a standard ball mount for flat wall surfaces, or a corner ball mount for clean installation in 90° wall corners.

Optional USB-C add-ons adapt the device to different installation scenarios. The device includes a standard USB-C port on the bottom for wall-mounted use with a cable. Use the male USB-C accessory for direct plug-in to a wall power adapter. Use the female USB-C accessory when placing the sensor upright on a shelf, TV cabinet, or other flat surface.

Engineered to Understand Your Home.

Processing & Connectivity

• ESP32-C6 microcontroller
• 32-bit RISC-V single-core processor
• Native 2.4 GHz IEEE 802.15.4 Zigbee
• Works with Home Assistant ZHA and Zigbee2MQTT
• No Wi-Fi credentials, cloud account, or ESPHome setup required
• Does not operate as a Zigbee router or repeater

mmWave Presence Radar

• Hi-Link LD2450 mmWave radar
• Detection range adjustable from 20 cm to 6 m
• Horizontal field of view up to 120°
• Vertical field of view approximately 70°
• Tracks up to 3 targets simultaneously
• Outputs real-time position, distance, and movement data
• Home Assistant target updates every 0.5 seconds
• Supports 3 detection zones
• Supports 1 exclusion zone

Air Quality Sensor

• Bosch BME688
• eCO₂ equivalent values
• VOC equivalent values
• Indoor Air Quality index
• Gas resistance measurement
• Temperature measurement
• Humidity measurement
• Air pressure measurement

Optional CO₂ Add-on

• True CO₂ measurement using NDIR technology (Sensirion SCD40)
• Measurement range up to 40,000 ppm
• High accuracy and long-term stability
• Integrated temperature measurement
• Integrated humidity measurement

Light Sensor

• Lite-On LTR-381RGB-01
• Ambient light measurement in lux

Feedback Components

• Full-color WS2812 RGB LED
• MLT8530 piezo buzzer
• Purple breathing LED while Zigbee is disconnected

Home Assistant Add-on

• Build interactive 2D and 3D floorplans
• View live presence targets in 2D and 3D
• Analyze movement using spatial heatmaps
• Configure range, detection zones, and exclusion zones