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About AKM
Sensor Core (Senseair)
The Sensor Core is the name of a product that is designed by modularizing an infrared light source / an infrared sensor / arithmetic operation and light source driving circuits / optical components, which make up Senseair's NDIR type CO2 sensor.
CO2 Sensors
Overview
Gas Detection Unit
This is a modularized product that contains an infrared light source, an infrared sensor, arithmetic operation and light source driving circuits, and optical components.
It outputs CO2 concentration values, so no additional calculations by the customer are required.
This product is ideal for customers who design their own circuits and enclosures for small CO2 measuring instruments.
Specifications Comparison
| Product name | Features | Average current | Measurement range | Power supply | Output | Communication | |
|---|---|---|---|---|---|---|---|
| I2C | UART | ||||||
Sunrise |
Low current consumption | 34 uA | 0-10,000ppm | 3.05-5.5 V | | ✓ | ✓ |
Sunlight CO2 |
Low current consumption | 30uA or lower | 400-10,000ppm | 3.05-5.5 V | ✓ | ✓ | |
S88 |
Compact | 18-60 mA | 0-20,000ppm | 4.5-5.25 V | PWM / Digital | ✓ | |
S8 |
Compact | 18-30 mA | 0-50,000ppm | 4.5-5.25 V | PWM / Digital | ✓ |
|
K30 |
Multi function | 40 mA | 0-5,000ppm | 4.5-14 V | Analog / Digital | ✓ | ✓ |
More Information...
Sunrise/Sunlight CO2
Senseair Sunrise/Sunlight CO2 (from Senseair corporation)
Senseair Sunrise/Sunlight CO2 is an NDIR type CO2 sensor that uses manufactured infrared LEDs and infrared sensors from AKM
Although the sensor accuracy is as high as ± (30ppm + 3% of the reading), the average current consumption is 34μA, so it can be powered by a battery.
It has a built-in Automatic Baseline Correction (ABC) algorithm which periodically performs calibration automatically, so it can be used without further maintenance after installation.
Evaluation kits are also available to start evaluation immediately.
Features
- Low current consumption
- Highly accurate
- Built-in Automatic Calibration Algorithm (ABC Algorithm)
- I2C and UART interfaces
- Complies with the ANSI/ASHRAE Standard 62.1-2022 Addendum d (*1)
Senseair Sunrise/Sunlight CO2
Specifications
Product name |
Sunrise |
Sunlight CO2 |
|---|---|---|
Product number |
006-0-0008 |
006-1-0100 |
Measurement range |
0-10,000ppm |
400-10,000ppm |
| Accuracy (*1) |
+/- (30ppm +3% of reading) |
+/- (50ppm +3% of reading) |
| Accuracy (ANSI/ASHRAE standard 62.1) (*2) |
+/- 75ppm | - |
Peak current |
< 125mA |
< 80mA |
Average current (*3) |
34uA |
30uA or lower |
Communication |
UART / I2C |
UART / I2C |
Dimensions |
33.5 × 19.7 × t11.5mm |
34 × 21 × t12mm |
Power supply |
3.05-5.5V |
3.05-5.5V |
| Operation Temperature range |
0-50℃ |
0-50℃ |
| Compliance with RESET | Grade A | Grade B |
| Compliance with WELL Building Standard | WELL v2 | WELL v2 |
[Notes]
*1 15-35℃, 0-85%RH, After three ABC period
*2 Measurement range: 1,501-2,500ppm
*3 Power supply 3.3V, Measurement period 16sec
Senseair Sunrise/Sunlight CO2
More Information...
Samples ...
Customer Stories
S88
Senseair S88 Family (from Senseair corporation)
Senseair S88 is a compact NDIR type CO2 sensor.
Being pin-compatible with Senseair S8, this product can be easily migrated from the existing system. It features not only a UART interface but also an alarm output, making it easy to implement in your product.
The S88 Series offers multiple models tailored to specific applications.
The S88 RESIDENTIAL and S88 LP comply with the latest standard for indoor ventilation and air quality management (ANSI/ASHRAE Standard 62.1-2022 Addendum d) (*1) . These features make them suitable for energy-saving HVAC applications and monitoring applications aimed at improving indoor air quality.
The S88 GH is a CO2 sensor designed for greenhouses and indoor agriculture, enabling stable air quality management even in high-humidity and high-concentration environments.
Evaluation kits are also available to start evaluation immediately.
[Notes] *1 As of October 1, 2025.
Features
- Complies with the ANSI/ASHRAE Standard 62.1-2022 Addendum d (*1)
- Compact
- Highly accurate
- Built-in Automatic Calibration Algorithm (ABC Algorithm)
[Notes] *1 S88 RESIDENTIAL, S88 LP
Senseair S88
Specifications
Product name |
S88 RESIDENTIAL |
S88 LP |
S88 GH |
|---|---|---|---|
Product number |
004-1-0100 |
004-1-0101 |
004-1-0102 |
Measurement range |
400-10,000ppm |
0-20,000ppm |
|
Accuracy (*1) |
+/- (50ppm+3% of reading) | +/- (40ppm+3% of reading) | +/- (50ppm+5% of reading) |
| Accuracy (ANSI/ASHRAE standard 62.1) (*2) |
+/- 75ppm | - | |
Peak current |
300mA |
||
Average current |
<30mA |
<18mA |
<60mA |
Alarm output |
1000 / 800ppm |
11000 / 10000ppm |
|
PWM output |
for 0-2000ppm |
for 0-15000ppm |
|
Communication |
UART |
||
Dimensions |
33.9 × 19.8 × t8.7mm |
||
Power supply |
4.5-5.25V |
||
Operation |
0-50℃ |
||
| Compliance with RESET | Grade B | - | |
| Compliance with WELL Building Standard | WELL v2 | - | |
[Notes]
*1 After three ABC period
*2 Measurement range: 400-2,500ppm
Senseair S88
More Information...
Samples ...
S8
Senseair S8 Family (from Senseair corporation)
Senseair S8 is a compact NDIR type CO2 sensor.
It is widely used in energy-saving HVAC applications and monitoring applications for improving indoor air quality.
In addition to a UART interface, it also has an alarm output, so it can be easily installed in products.
Evaluation kits are also available to start evaluation immediately.
Features
- Compact
- Highly accurate
- Built-in Automatic Calibration Algorithm (ABC Algorithm)
Senseair S8
Specifications
Product name |
S8 COMMERCIAL |
S8 RESIDENTIAL |
S8 LP |
S8 2% |
S8 5% |
|---|---|---|---|---|---|
Product number |
004-0-0010 |
004-0-0013 |
004-0-0053 |
004-0-0050 |
004-0-0017 |
Measurement range |
0-10,000ppm |
0-20,000ppm |
0-50,000ppm |
||
Accuracy (*) |
+/- (30ppm +3% of reading) |
+/- (70ppm +3% of reading) |
+/- (40ppm +3% of reading) |
+/- (200ppm +3% of reading) |
+/- (200ppm +10% of reading) |
Peak current |
300mA |
||||
Average current |
30mA |
<18mA |
30mA |
||
Alarm output |
1000 / 800ppm |
8500 / 6500ppm |
|||
PWM output |
for 0-2000ppm |
for 0-20,000ppm |
for 0-50,000ppm |
||
Communication |
UART |
||||
Dimensions |
33.9 × 19.8 × t8.7mm |
||||
Power supply |
4.5-5.25V |
||||
Operation |
0-50℃ |
5-50℃ |
|||
[Notes] *1 After three ABC period
Senseair S8
More Information...
Samples ...
K30
Senseair K30 Family (from Senseair corporation)
Senseair K30 can be customized for a variety of sensing and control applications.
It has two analog outputs and two digital outputs, so this flexible product it can be used with the Senseair Development Kit and UIP5 in custom configurations.
Evaluation kits are also available to start evaluation immediately.
Features
- Custom configuration support
- Highly accurate
- Analog and digital output
- Built-in Automatic Calibration Algorithm (ABC Algorithm)
Senseair K30
Specifications
Product name |
K30 |
K33 LP T |
|---|---|---|
Product number |
030-8-0006 |
033-8-0008 |
Measurement range |
0-5,000ppm |
0-5,000ppm |
Accuracy (*) |
+/- (30ppm +3% of reading) |
+/- (30ppm +3% of reading) |
Peak current |
<300mA |
<300mA |
Average current |
40mA |
<1.5mA |
Linear analog output (for 0 - 2,000ppm) |
OUT1 : 0-4V OUT2 : 1-5V |
- |
Digital output |
OUT3 : 700 / 800ppm OUT4 : 900 / 1,000ppm |
- |
Communication |
UART / I2C |
UART / I2C |
Dimensions |
51 × 58 × t12mm |
51 × 57 × t12.5mm |
Power supply |
4.5-14V |
4.75-12V |
Operation |
0-50℃ |
|
[Notes] *1 After three ABC period
Senseair K30 (from Senseair corporation)
More Information...
Samples ...
About Senseair
Senseair, which became a member of the Asahi Kasei Microdevices (AKM) Group in 2018, is a provider of gas sensors using NDIR: Non-Dispersive InfraRed technology. Our goal is to constantly develop and mass-produce new gas sensor technologies.
