Compatible with a wide range of devices in various output formats. CO2 sensor suitable for small to medium-sized facilities and local control.
The CO2 sensor and controller "NMA/SMA series" measures indoor CO2 concentration, temperature, and humidity, displaying the data in real-time. It has a lineup that can accommodate various outputs and allows for control of devices based on the measured values. Please utilize it for energy saving and environmental improvement in new and existing buildings, as well as for enhancing efficiency in agriculture. 【Use Cases】 ■ Construction Sector: CO2 control for ventilation fans, total heat exchangers, dampers, etc., and integration with central monitoring and air conditioning systems. ■ Agriculture Sector: Control of CO2 generators. 【Implementation Effects】 ■ Improvement of indoor environment (realization of comfortable spaces) ■ Reduction of electricity costs (energy saving) ■ Increased productivity of crops. 【Exhibition Information】 We plan to exhibit at the largest construction industry exhibition, Smart Building Expo 2025. ■ Venue: Tokyo Big Sight ■ Dates: December 10 (Wednesday) to 12 (Friday), 2025 ■ Booth Number: 33-25 *Advance registration is required for attendance.
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basic information
【Features】 ■ Uses high-precision NDIR dual-beam sensor ■ Automatic control of ventilation equipment according to CO2 concentration is possible ■ Built-in relay output (voltage-free contact) ■ Analog output (4-20mA, 0-10V) available ■ Digital output compatible with RS-485 Modbus ■ Integrated from measurement to control, making installation, replacement, maintenance, and calibration easy ■ Cover for the display section and operation buttons available (only for SMA series) Specifications vary by model, so please download the documentation for more details.
Price information
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Price range
P2
Delivery Time
※Due to fluctuations in quantity, please contact us for more details.
Applications/Examples of results
【Uses】 ■Classrooms (elementary schools, junior high schools, high schools, universities) ■Office buildings ■Commercial facilities ■Public spaces ■Hospitals, nursing facilities ■Greenhouses, plant factories *For more details, please refer to the PDF document or feel free to contact us.
Line up（6）
| Model number | overview |
|---|---|
| NMA-PR-R | - CO2 measurement range: 0 to 3000 ppm - Relay output - RS232C output - Power supply: AC 100 to 240 V |
| NMA-PR-RD | - CO2 measurement range: 0 to 3000 ppm - Data logger function - Relay output - RS232C output - Power supply: AC 100 to 240 V |
| NMA-VRC-II | - CO2 measurement range: 0 to 5000 ppm - Relay output - RS232C output - Analog output - Power supply: DC 24 V |
| NMA-VRC-IIM | - CO2 measurement range: 0 to 3000 ppm - RS485 Modbus RTU - Relay output - RS232C output - Analog output - Power supply: DC 24 V |
| NMA-VRC-IID | - CO2 measurement range: 0 to 3000 ppm - Data logger function - Relay output - RS232C output - Analog output - Power supply: DC 24 V |
| SMA-VRC-III | - CO2 measurement range: 0 to 5000 ppm - RS485 Modbus RTU - Relay output - RS232C output - Analog output - Power supply: DC 24 V |
catalog（1）
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Company information
Since its establishment in April 1979, CHC System Co., Ltd. has been recognized as a distinctive environmental engineering company focused on environmental conservation. We specialize in the construction of building facilities primarily related to air conditioning, the planning, manufacturing, and sales of artificial marble products such as system kitchens and wash counters, and the development and sales of CO2 controllers that achieve energy efficiency and a comfortable indoor environment, earning high praise for our quality and customer service. Currently, we have established a construction company and an architectural design office within our group, expanding our business as a comprehensive construction and equipment company that handles everything from planning and designing buildings to executing and managing various facility construction projects. We aim to continue growing while seeking total harmony between architecture and facilities. In the future, in addition to architecture, facilities, and design, we will expand our business as an environmental equipment manufacturer that responds to societal needs, striving to be of service to everyone.