🫥 SONOFF CMSH03 — Recessed Ceiling-Mount Adapter for Zigbee Motion Sensor
Hide the sensor, keep the detection. The SONOFF CMSH03 is a recessed ceiling-mount adapter that lets your SNZB-03P motion sensor sit nearly flush with the ceiling — blending in like a recessed downlight instead of a gadget stuck to your ceiling. The sensor keeps its full range of angle adjustment and full detection performance, with no modifications to the sensor required. Clean white finish that disappears into any interior. MPN: CMSH03. Compatible with SNZB-03P and SNZB-03PR2 only.
Two models — match the adapter to your sensor:
⚡ Key Features
- Flush-Mount, Clean Look — the sensor sits almost flush with the ceiling, blending in like a recessed light; no bulky device, no exposed housing
- Full Angle Adjustment Preserved — the sensor retains its complete range of angle adjustment for precise aiming of the detection zone
- No Loss of Detection — designed for looks without sacrificing functionality; detection accuracy is maintained
- No Sensor Modification — the bracket mounts around your existing sensor; nothing is altered, glued, or drilled on the sensor itself
- Fast Installation — installs in minutes into a ceiling cutout; the sensor clips into the adapter
- Blends into Any Interior — clean white design that fits seamlessly with modern ceilings and finishes
🏠 Perfect For
Designer Interiors
Motion automation without visible gadgets. The sensor disappears into the ceiling line — ideal for renovated homes, apartments, and interiors where clean finishes matter.
Hallways & Passages
Ceiling-mounted motion coverage looking straight down the passage. Lights on when you walk through, and the sensor is barely noticeable overhead.
Offices & Boardrooms
Professional spaces where stick-on sensors look out of place. Recessed mounting gives commercial-grade neatness with the same eWeLink automation.
Discreet Security
A flush sensor draws less attention than a surface-mounted one. Combine with door sensors for security coverage that does not advertise itself.
🔄 CMSH03 vs CMSH06
| Feature | CMSH03 (This Product) | CMSH06 |
|---|---|---|
| Fits Sensor | SNZB-03P / SNZB-03PR2 | SNZB-06P / SNZB-06P24 |
| Sensor Type | PIR motion (battery powered) | Radar presence (USB-C powered) |
| Mounting Style | Recessed, near-flush | Recessed, near-flush |
| Angle Adjustment | Full range preserved | Full range preserved |
| Best For | Hallways, passages, security zones | Living rooms, offices — rooms where you sit still |
🧩 Pairs With
SONOFF SNZB-03P Motion Sensor
The sensor this adapter is made for. 6 m / 110° PIR detection, 3-year battery, Zigbee 3.0. Sold separately.
View Product →SONOFF CMSH06 Adapter
The same recessed ceiling mount, sized for the SNZB-06P radar presence sensor. Pick this one for rooms where you sit still.
View Product →SONOFF SNZB-06P Presence Sensor
Detects even a stationary person via 5.8 GHz radar. Pair with the CMSH06 adapter for a flush ceiling install.
View Product →SONOFF ZB Bridge-P
Affordable Zigbee-to-WiFi gateway for your sensors. Supports up to 128 devices via eWeLink.
View Product →📋 Technical Specifications
| Product | SONOFF Motion Sensor Recessed Ceiling-Mount Adapter |
| MPN / Model | CMSH03 |
| Compatible Sensors | SNZB-03P · SNZB-03PR2 (only) |
| Mounting Style | Recessed ceiling mount, near-flush finish |
| Angle Adjustment | Sensor's full adjustment range preserved |
| Colour | White |
| Dimensions | 87 x 66 x 24.5 mm |
| Net Weight | 34 g |
| Sensor Included | No — adapter only |
❓ Frequently Asked Questions
Is the sensor included?
Will it fit the SNZB-06P presence sensor?
Do I need to cut a hole in my ceiling?
Does recessing the sensor reduce its detection range?
Can I still change the sensor battery?
🤝 Need Help? We're Here for You!
Visit Us
8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Hide the Sensor. Keep the Detection.
Flush ceiling finish. Full angle adjustment. Minutes to install.
