SISCO 7-in-1 air quality sensor module offers 0-999μg/m3 PM2.5 and 400-5000ppm CO2 measurement with 24-hour auto-calibration. The module outputs temperature, humidity, formaldehyde, and particulate matter via RS485 Modbus. It features electrochemical CH2O sensing and laser scattering technology, supporting standard Modbus RTU protocol for seamless system integration.
7-in-1 Multi-Parameter Detection
- Measures CO2, formaldehyde, TVOC, PM2.5, PM10, temperature, and humidity simultaneously.
- Combines NDIR, electrochemical, laser scattering, and VOC sensing technologies in one module.
- Outputs all data via RS485 digital interface, reducing wiring complexity.
- Requires only a 5V DC power supply and delivers real-time data instantly upon power-on.
RS485 Digital Communication with Modbus Protocol
- Supports standard Modbus RTU protocol for direct integration with PLC, HVAC, and building automation systems.
- Allows daisy-chaining of multiple sensors on a single two-wire bus, reducing installation cost.
- CO2 sensor incorporates 24-hour auto-calibration to maintain long-term measurement stability.
- Interfaces with host controllers through an XH2.54 connector with a secure locking mechanism.
Applications
SISCO 7-in-1 air quality sensor module is widely used in smart home systems, HVAC control, fresh air ventilators, air purifiers, building automation, environmental monitoring stations, greenhouses and agricultural facilities, hotel and office indoor air quality management, as well as industrial ventilation and exhaust systems.
Agricultural Facility
Environmental Monitoring
Industrial Ventilation
Smart Home System
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| Model | SISCO-AQS-M701 | ||
| Category | Resolution | Range | Accuracy |
| CO2 | 1ppm | 400ppm~5000ppm | ±3%+50PPM or ±10% |
| CH2O | 1μg/m3 | 0μg~2000μg/m3 | ±10% |
| TVOC | 1μg/m3 | 0μg~2000μg/m3 | ±25% |
| PM2.5 | 1μg/m3 | 0μg/m3~999μg/m3 | ±10% or ±10 |
| PM10 | 1μg/m3 | 0μg/m3~1000μg/m3 | ±10% or ±10 |
| Temperature | 0.01℃ | -40℃~100℃ | ±1℃ |
| Humidity | 0.004 | 0~100% | ±3%RH |
| Physical Interface | XH2.54 Female connection plug | ||
| Output Data | RS485 | ||
| Working Voltage | 5.0±0.2VDC | ||
| Working Current | < 500 mA (CO2 transient requires 300 mA)Â | ||
| Preheating Time | 2 minutes (Only TVOC needs preheating; other parameters will be displayed upon power-on) Â Â | ||
| Working Temperature | 0℃~50℃ | ||
| Working Humidity | ≤95%RH | ||
| External Dimensions | 71*62*16mm (L*W*H) | ||
Dimensions (unit: mm)
Details
Q1: What is the preheating requirement for the 7-in-1 air quality sensor module?
A1: The CO2/TVOC/PM2.5/PM10 sensor module displays all parameters instantly upon power-on except TVOC, which requires approximately 2 minutes of warm-up time to deliver stable readings.
Q2: What communication protocol does this air quality monitoring sensor module support?
A2: The digital air quality sensor module supports RS485 communication with the standard Modbus RTU protocol, allowing seamless integration with PLCs, building automation systems, HVAC controllers, and other industrial equipment.
Q3: How is the CO2 measurement accuracy maintained over time on this sensor module?
A3: The air quality sensor module features 24-hour automatic self-calibration for the CO2 sensor, which compensates for sensor drift and ensures long-term measurement stability without manual intervention.
Tips: How to ensure accurate readings from your 7-in-1 air quality sensor module?
- Install the CO2/TVOC/PM2.5/PM10 sensor module in a location with adequate airflow, avoiding corners, behind furniture, or near walls where air circulation is restricted.
- Keep the air quality monitoring sensor module away from direct sunlight, heat sources, steam outlets, and HVAC supply vents to prevent temperature and humidity interference.
- Allow the sensor module to operate continuously for at least 2 minutes after power-on, as TVOC requires warm-up time before delivering stable readings.
- Perform periodic visual inspection of the sensor module's ventilation openings to ensure they remain free from dust accumulation that may affect particulate matter measurement.
Thank you for buying industrial test and measurement equipment on SISCO.com, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.
What is covered?
SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.
What is not covered?
- Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
- Expendable parts.
- Routine cleaning or normal cosmetic and mechanical wear.
- Damage from misuse, abuse or neglect.
- Damage from use of parts other than SISCO approved.
- Damage from use outside the product’s usage or storage parameters.
- Damage from use of parts not sold by SISCO.
- Damage from modification or incorporation into other products.
- Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
- Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
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