The Colorlight SSR-SMOG smoke sensor is a ceiling-mounted transducer for monitoring smoke near an LED display installation. It provides a 0–2000 ppm measurement range and sends readings through an RS485 interface using Modbus RTU. An integrated audible and visual alarm provides a local alert.
Key features
- Smoke monitoring: 0–2000 ppm measurement range.
- Remote data: RS485 communication with Modbus RTU protocol and a 9600 baud rate.
- Local alert: built-in sound and light alarm.
- Installation: ceiling-mounted design with a standard 5 m cable.
- Power: DC 12 V adapter; typical power consumption is 2 W.
Colorlight SSR-SMOG specifications
| Parameter | Specification |
|---|---|
| Measurement range | 0–2000 ppm |
| Communication | RS485, Modbus RTU |
| Baud rate | 9600 bit/s |
| Power adapter | DC 12 V, 2 A |
| Power consumption | 2 W |
| Standard cable length | 5 m |
| Mounting | Ceiling |
Integration notes
Connect the sensor to equipment that supports its RS485 interface and Modbus RTU settings. Confirm the connector, wiring, power supply and communication parameters against your controller and the SSR-SMOG specification before installation. The sensor is intended for smoke monitoring; check the requirements of your site before using it in a safety system.
Frequently asked questions
What is the measurement range?
The SSR-SMOG is specified for 0–2000 ppm smoke measurement.
How does it send data?
It uses an RS485 interface and Modbus RTU communication at 9600 bit/s.
What power does it need?
The listed power adapter is DC 12 V, 2 A, and the sensor’s power consumption is 2 W.
Download the SSR-SMOG specification
For connector or controller compatibility questions, contact us with your LED display control system details.





