Monitors indoor air quality including CO2, formaldehyde, VOCs, and particulate matter.
Overview
The Inbiot Mica Wall is an indoor air quality sensor communicating over Modbus RTU at 9600 baud. This template reads temperature, humidity, CO2, formaldehyde, total VOCs, suspended particles, and a renovation-hour signal indicating when ventilation is needed.
Key readings
Temperature
Humidity
CO2
Formaldehyde / O3
VOCs
PMs and Renovation-hour
Use cases
Monitor CO2, humidity, and temperature trends in office buildings to verify ventilation performance.
Create an alert when the renovation-hour signal activates so the building manager is notified to increase ventilation.
Log formaldehyde and TVOC levels over time to document indoor air quality compliance for building certifications.
Track particulate matter readings across multiple zones by deploying several Mica Wall sensors on one Modbus RTU bus.
Generate periodic IAQ reports for facility managers using historical data stored in the ModbusCloud platform.
Installation
1Wire the Inbiot Mica Wall to the ModbusCloud gateway (MCG or MLP series) using a shielded RS-485 cable, connecting A, B, and GND terminals.
2Set the Modbus RTU slave address on the Mica Wall according to its configuration manual, ensuring it does not conflict with other devices on the same bus.
3Confirm the baud rate is set to 9600 on both the Mica Wall and the ModbusCloud gateway.
4Import the Inbiot Mica Wall template from the ModbusCloud template library into your project.
5Assign the correct slave address in the template configuration to match the physical device address.
6Verify that temperature, humidity, and other readings appear on the ModbusCloud dashboard within a few polling cycles.
Things to watch for
Registers (7)
7 read / 0 write
Name
Address
Function
Type
Unit
Access
Temp.
1
FC03
float32
ºC
R
CO2
3
FC03
uint16
ppm
R
Humidity
2
FC03
float32
%
R
Formaldehyde _ O3
4
FC03
uint16
ug/m3
R
COVs
5
FC03
uint16
ug/m3
R
PMs
6
FC03
uint16
ug/m3
R
Renovation-hour
7
FC03
uint16
ren / hora
R
Use directly in ModbusCloud
Import this template into your own portal with one click, or get in touch for installation support.
