Ceiling-mounted microwave presence sensor with embedded Casambi. 100° detection cone with adjustable sensitivity and hold time configured wirelessly from the Casambi app — no separate hardware tools or wiring changes required. Ideal for open-plan offices, corridors, and healthcare environments where high-accuracy presence detection is required.
Key Benefits
100° detection cone using 24 GHz microwave technology detects through furniture and partitions, capturing true presence even when occupants are stationary — eliminating the false-off problem common with PIR sensors.
All sensor parameters — sensitivity, hold time, daylight threshold, and linked Casambi groups — are configured directly from the Casambi app. No ladder or tools required after installation.
Automatically dims or switches off lights when a space is unoccupied. Works in parallel with manual scene control from any Casambi switch — both inputs coexist without conflict.
Technical Specifications
| Model | MSA211 B |
| Detection Technology | 24 GHz microwave radar |
| Radar Frequency | 24–24.25 GHz ISM band |
| Detection Coverage | Presence 5–7 m / Motion 6–8 m diameter |
| Beam Angle | 100° (XZ) / 100° (YZ) |
| Lux Sensing | 0–1200 Lux |
| Supply Voltage | 100–240 VAC, 50/60 Hz |
| Mounting Height | 2.5–4.0 m (typical 3 m) |
| Hold Time | 1 min + app-configurable |
| Dimensions | Ø90 × 80 mm |
| Drill Hole | Ø75 mm |
| Operating Temperature | 0°C to +50°C |
| Storage Temperature | -25°C to +80°C |
| Ingress Protection | IP20 |
| Certifications | FCC/RED, RoHS |
Tell us your room sizes and occupancy patterns and we will recommend the right sensor mix and quantities.