Sensor Core

Flammable Gas Sensors

Sunlight R32

Senseair Sunlight R32 (Sense Air)

Senseair Sunlight R32 is an NDIR type micro-flammable refrigerant (R32) gas sensor that uses an infrared LED and an infrared sensor of AKM. 

Designed by using an LED as the light source, this product has achieved excellent safety, high reliability, and a long service life. Its low power consumption and compact and highly accurate specifications enable more flexible product design. 

The built-in ABC (Automatic Baseline Correction) algorithm is automatically calibrated periodically, allowing its use without maintenance once it is installed.  With the increasing demand for sensors, we can provide sensors with performance that can comply with standard requirements for accuracy and response speed.

Senseair Sunlight R32 Senseair Sunlight R32


  • High safety
  • Outstanding reliability and longer service life
  • Low power consumption
  • High accuracy
  • Built-in auto-calibration algorithm (ABC algorithm)
  • I2C and UART interfaces


Product name

Sunlight R32

Product number


Measurement range

0 - 50% LFL
0 - 25% LFL (Standard), 25 - 50% LFL (Extended)

Accuracy (*)

±2.5% LFL at Standard, ±5.0% LFL at Extended

Peak current


Average current (**)


Alarm output
(Open / Close)


PWM output
(0-100% duty cycle)





34 x 21 x t12mm

Power supply


Temperature range

-40 - 70℃

Senseair Sunlight R32

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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.