Siro-MOD

Multifunctional indoor air quality transmitters for building automation systems with Modbus communication

Siro-MOD is an indoor air quality transmitter with Modbus communication. Siro-MOD has a modern design and new hardware, including sensors. The transmitter is available with several optional air quality sensors including temperature, relative humidity, CO2 concentration, VOC (Volatile Organic Compounds) and PM (Particule Matter). It offers easy installation and adjustment, several different model options and various output signals that are configurable separately for each measurement parameter. Siro utilizes the industry standard NDIR measurement principle with self-calibrating ABC logicTM for CO2 measurement.

Available in April 2021.

 

Technical details

Communication: RS-485 Modbus (RTU)
Accuracy:
CO₂: ±30 ppm + 3 % of reading (typical)
Relative humidity: ±2.2 % rH (typical at 20 °C, 30 % rH)
Temperature: ±0.4 °C (typical at 20 °C)
TVOC: ±15 % of reading (typical)
PM:
0…100 μg/m3: PM2.5: ±15 μg/m3; PM1.0, PM10: ±25 μg/m3
100…1000 μg/m3: PM2.5: ±15 %; PM1.0, PM10: ±25 %
(at 25 °C ±5 °C)
Measuring units: CO2: ppm
Relative humidity: % rH
Temperature: °C
VOC CO2eq: ppm
TVOC: ppm, μg/m3
PM1/2.5/10: μg/m3
Calibration (CO2): Automatic self-calibration, ABC LogicTM
Supply voltage: 24 VDC/VAC ±10 %
Operating temperature: 0...+50 °C
Protection standard: IP20

Siro-MOD

Example
Siro-CO2-T-D

Model

Product series

Siro
Indoor air quality transmitter
Siro

Model type

-MOD
With Modbus communication
-MOD

CO2 sensor

-CO2
With CO2 sensor (option not available with PM sensor)
Without CO2 sensor

VOC sensor

-VOC
With VOC sensor (option not available with PM sensor)
Without VOC sensor

PM sensor

-PM
With PM sensor (option not available with CO2 and VOC sensors)
Without PM sensor
-PM

Relative humidity sensor

-rH
With relative humidity sensor
Without relative humidity sensor (option not available with VOC sensor)

Temperature sensor

-T
With temperature sensor
Without temperature sensor (option not available with VOC or rH sensor)
-T

Output

Voltage output
-A
Voltage and current output

Display

-D
With display
Without display
-D

Other Indoor air quality: