Hardware Versions
CeilSense Mini is one of three current ceiling sensors: Mini, V2 and Pro. This page compares them, shows how the Mini differs from the other models and helps you tell which one you have.
Family Comparison
| Mini | V2 | Pro | |
|---|---|---|---|
| Cut-out | 68 mm | 76 mm | 92 mm |
| Recessed body diameter | 67 mm | 74 mm | 90 mm |
| Mounting | Recessed or surface | Recessed in a spotlight hole | Recessed or surface |
| Design | New design, same as the Pro | Based on V1, LED ring shines down | New design, same as the Mini |
| Radar options | LD2412 + LD2450, LD2460 or LD6002B | LD2412 + LD2450, LD2460 or LD6002B | LD2412 + LD2450, LD2460 or LD6002B |
| CO2, temperature, humidity | No | With the SCD41 module | Yes |
| Light sensor | Yes | Yes | Yes |
| RGB LED ring | 16 LEDs | 16 LEDs, shining down | 16 LEDs |
| Buzzer | Yes | Yes | Yes |
| VOC and NOx (SGP41) | No | No | Yes |
| Optical smoke sensing | No | No | Experimental, not EN 14604 certified |
| Speaker and microphone | No | No | Yes |
| Power | PoE or USB-C | 110 to 240 V, PoE or USB-C | 110 to 240 V, PoE or USB-C |
| Network | WiFi or Ethernet with PoE | WiFi or Ethernet with PoE | WiFi or Ethernet with PoE |
| Depth above the ceiling (recessed) | About 23.15 mm, plus plugs and cables | About 41.46 mm, plus plugs and cables | About 28.6 mm, plus plugs and cables |
This table shows the hardware. The current Mini firmware is WiFi only and supports LD2412 + LD2450. Ethernet and PoE firmware and builds for the LD2460 and the LD6002B are planned for release. See Firmware.
How the Mini Differs
From CeilSense V2
- Smaller. A Ø 68 mm cut-out instead of Ø 76 mm, and 23.15 mm above the ceiling instead of 41.46 mm.
- Two mounting options. Recessed or surface. V2 is recessed only.
- No mains connection. The Mini runs on PoE or USB-C and cannot run on mains.
- No climate sensors. No CO2, temperature or humidity, no SCD41 module and no air pressure sensor.
- One light value. The Mini has
Illuminanceand no corrected second value. - LED ring around the device. The Mini lights up all around, while the V2 ring shines down. The current Mini firmware has one effect, Rainbow, and shows a rainbow during start-up.
- Less flash. 4 MB instead of 8 MB.
- New design. The Mini shares its design with the Pro. V2 is based on V1.
From CeilSense Pro
The Mini has the same design as the Pro, but it is smaller. The Pro adds CO2, temperature, humidity, VOC and NOx, optical smoke sensing, a speaker, a microphone and mains power. The Pro uses an ESP32-S3 instead of an ESP32-C6.
From CeilSense V1
The Mini is not a successor of V1. That is CeilSense V2. The Mini is a separate model for places where you only need presence and light.
- The firmware is different. V1 uses an ESP32-S3 and the Mini an ESP32-C6. Do not install V1 firmware on the Mini.
- The hole is the same size. V1 uses a 68 mm hole and the Mini a Ø 68 mm cut-out. Still measure the opening and the space above it.
- It measures less. The Mini has no CO2, temperature, humidity or air pressure, and no mains connection.
- New on the Mini. A buzzer and surface mounting.
- Some V1 firmware features are not in the Mini. The V1 firmware has a built-in motion light. The current Mini firmware does not. You build this yourself with automations.
Which Model Should You Choose?
Choose CeilSense Mini if you want presence and light on PoE or USB-C, for example in a hallway, corridor, toilet or utility room, or in a bedroom where you only want light automation.
Choose CeilSense V2 if you want the complete ceiling sensor with CO2, temperature and humidity and three power options, for example in a living room, office or bedroom where air quality matters.
Choose CeilSense Pro if you also want VOC and NOx, optical smoke sensing, a speaker and a microphone.
The Mini and the Pro can be surface-mounted. V2 is recessed only, so it needs a cavity above the ceiling. See the Installation Guide.
Which One Do You Have?
Start with the product name on your order. If you no longer have it, use this table:
| Model | How to recognize it |
|---|---|
| CeilSense Mini | Recessed or surface, outer rim Ø 85.61 mm when recessed, no mains connection. Home Assistant shows LED Ring and Buzzer Test, but no Air Pressure. |
| CeilSense V2 | Recessed, outer rim Ø 95.5 mm, LED ring shines down. Home Assistant shows LED Ring, Buzzer Test and Air Pressure. |
| CeilSense V1 | Recessed in a 68 mm hole, LED ring shines down, no buzzer. See the V1 documentation. |
| CeilSense Pro | Recessed or surface, outer rim Ø 115 mm, speaker and microphone. |
Still not sure? Contact support and include a photo of the device and your order number.
Thread
CeilSense Mini uses an ESP32-C6. This chip has an 802.15.4 radio, but no Thread firmware has been announced for the Mini. It connects over WiFi, and over Ethernet once that firmware is available.
The same applies to V2. The Pro uses an ESP32-S3, which has no Thread radio.