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Presence & motion
Combine PIR, millimeter-wave radar and thermal sensing to understand movement and presence in your space.
Smart presence sensor
Theia Pro
Updated hardware. Refined enclosure. Presence, environmental sensing, an IR blaster and a built-in siren — with local operation and optional Micelio Cloud.
Inside Theia
See how it comes together.
Explore the updated enclosure, internal boards and sensing components in this animated exploded view.
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Real solutions for real spaces.
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Air quality & comfort
Monitor CO₂, temperature, humidity, ambient light and pressure in one connected device.
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IR remote control
An integrated infrared transmitter and receiver supports control of compatible TVs, air conditioning and other appliances.
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Integrated siren
A built-in buzzer supports audible alerts alongside your connected automation routines.
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Privacy-first monitoring
Presence, movement and fall-alert features without cameras, microphones or wearables. Not intended for medical use.
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Local control. Optional cloud.
Core functions run locally. Micelio Cloud adds optional remote access, historical data and connected management.
Automation with awareness.
Interpret presence, count and position, while monitoring temperature, humidity, atmospheric pressure, light intensity and air quality. Use these insights to support occupancy management and more efficient heating, air conditioning and ventilation.
The Theia-1 Presence Sensor is not intended for medical use; its purpose is solely for notification.
Technical overview
Specifications
| Model | THEIA-1P |
|---|---|
| Sensors | PIR motion, mmWave radar, thermal sensing, CO₂, temperature, humidity, ambient light and pressure |
| Wireless connectivity | Wi-Fi IEEE 802.11 b/g/n 2.4 GHz; Bluetooth LE / Bluetooth 5; Zigbee 3.0 |
| Ethernet | 10/100 Mbps with Power over Ethernet (PoE) |
| Smart home integrations | Home Assistant, Alexa and Google Home. Apple HomeKit is planned for a future software version. |
| Lighting | Customizable RGB LED with 16.8 million colors |
| Motion detection | PIR: 7 m (W) × 5 m (D) × 1.8 m (H); mmWave radar: 6 m |
| Thermal sensing | Up to 7 m; maximum 90° vertical and horizontal aperture |
| Temperature sensor | −10 to +85°C; ±0.2°C maximum; display step ±0.5°C |
| Humidity sensor | 0–99% RH; ±3% RH maximum |
| Light sensor | 0–20,000 lux; ±2 lux |
| CO₂ sensor | 0–40,000 ppm; ±(50 ppm + 5%) |
| Pressure sensor | 300–1,100 hPa; ±0.12 hPa |
| Wi-Fi frequency / maximum power | 2412–2484 MHz / ≤20.5 dBm |
| Bluetooth frequency / maximum power | 2402–2480 MHz / ≤20 dBm |
| Zigbee frequency / maximum power | 2402–2480 MHz / ≤6 dBm; range up to 75 m |
| Radar frequency | 58–63.5 GHz; 5.5 GHz bandwidth |
| IR transmitter & receiver | Six 940 nm IR LEDs; 38 kHz remote-control receiver |
| Sound buzzer | Up to 75 dB at 10 cm / 4 kHz; variable tone 100 Hz–10 kHz |
| Dimensions | 100 (W) × 85 (H) × 37 (D) mm |
| Weight | 128 g |
| Operating temperature | −10 to +85°C (14–185°F) |
| Operating humidity | 0–100% RH |
| Included in the box | Theia device, USB-C to USB-A cable, support, magnet, double-sided 3M tape, screws and wall plugs |
| Power | USB-C 5V/1A or Ethernet PoE; no battery operation |
Detection ranges depend on installation and environment. Theia is not intended for medical use; its purpose is notification and automation.
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