Refrigerant Sensor
enseair Sunlight R32 & R454 A/B/C is a high-precision A2L NDIR sensor module engineered for reliable refrigerant leak detection in HVAC systems. Designed to meet the demands of North American markets, it complies with IEC 60079-29-1 and IEC/UL 60335-2-40 standards for HC-R applications.
Featuring an optical solid-state design with an LED light source and photodiode detection, the sensor is immune to poisoning and resistant to vibrations. Its Automatic Baseline Correction (ABC) function guarantees accuracy over a 15‑year lifespan. In addition to R32, the sensor supports individually specified refrigerants R454A, R454B, and R454C of the A2L class.
We at Senseair believe in quality and accuracy. When it comes to gas measurements, you want a sensor that you can always trust – without the need for maintenance. Equipped with a self-correcting algorithm (ABC: Automatic Baseline Correction), you can mount your Sunlight sensor and then leave it alone for 15+ years while maintaining a dependable system. Our Sunlight sensors are optimized for battery and wireless applications, or in places where you need a reliable and secure sensor with a long life.
Senseair’s Sunlight R32 can be used in a wide range of refrigerant applications. Using LED as the light source and a photodiode in the sensor section ensures highly safe operation of equipment that uses a mildly flammable refrigerant (R32).
| Article number | 009-4-0001 |
| Operating principle | Non-dispersive infrared (NDIR) |
| Measured gas | R32, R454 A/B/C |
| Measurement range | 0–50 LFL |
| Accuracy | ±2.5% LFL |
| Operation conditions | -40 – 70 °C, 0 – 95% RH |
| Warm-up time | 0s |
| Response time | <12s |
| Power supply | 3.05 - 5.5 V |
| Peak current | 94 mA |
| Average current | 1-94μA |
| Communication | I2C, UART |
| Outputs | Digital |
| Compliance | IEC 60079-29-1, IEC 60335-2-40 Ed.7, UL 60335-2-40 Ed.4 |
| Maintenance | Periodic Zero calibration or ABC Calibration |
| Life expectancy | >15 years |
| Dimensions | 34 x 21 x 12 mm (L x W x H) |
| Weight | 5 g |
| Storage conditions | -40 - 85 °C |
Disclaimer : Please refer to product specification for the complete technical details.
