Part #: MBusAO_RTH_CO2_LCD_Wall
The MBusAO_RTH_CO2_LCD_Wall sensor is a 3-in-1 combination sensor used to detect, transmit, and display CO2, Humidity, and Temperature levels.
This Modbus-RTU enabled temperature / humidity / CO2 sensor has a backlit LCD display and is designed to be mounted on a wall or a surface.
The sensor values can be read in real-time over RS485 networks via the Modbus-RTU protocol; additionally, sensor values can be measured by PLCs, Automation Controllers, or I/O devices by using the three 0-5V analog outputs built into the device.
The backlit LCD display shows the current sensor values. The LCD display background color changes from Green at safe CO2 levels to Yellow/Orange at Moderate CO2 levels to Red at Dangerous CO2 levels.
| CO2 Sensing Technology | Non-Dispersive Infrared Detector | |
| CO2 Range | 0~2,000ppm | |
| CO2 accuracy（@ 25℃ ） | ±40ppm + 3% reading | |
| Stability | <2% of FS over lifetime (15 years) of sensor | |
| Calibration | ABC Logic self-calibration | |
| Response time | <2 minutes for 90% step change | |
| Temperature range / accuracy | 0~50℃/ ±0.4℃ | |
| Humidity accuracy | ±3%RH (20%RH~70%RH, 25℃) | |
| Warm time | 2hrs (First time or after power off for a long time) 2min (operational) |
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| Analog Outputs | 3 x 0~5VDC analog outputs | |
| 3 color backlit LCD | Green: CO2 measurement ≤ 1,000ppm Yellow: 1,000ppm< CO2 measurement ≤1,400ppm Red: CO2 measurement >1,400ppm |
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| Power supply | 24VAC/VDC | |
| Power Consumption | 1.8 W max., 1.2 W average | |
| Operating Conditions | 0~50℃(32~122℉); 0~95%RH, non condensing | |
| Storage condition | -40~70℃(-40~158℉) | |
| Net weight/ Dimensions | 210g / 130mm×85mm×36.5mm | |
| Housing | PC/ABS fire-proof, IP30 protection | |
| Certifications | CE-approved |
MBusAO_RTH_CO2_Wall Modbus Map
MBusAO_RTH_CO2 Tech Sheet and Install Guide