Target: R454B, R32, R290, Refrigerant
Model: ZRT510
Detection principle: NDIR
Characteristics: High sensitivity, high resolution, fast response
Size: 75.4*57*21.5 mm (without connecting cable)
Notes: Compliant with CE, UL 60335-1:2016, UL 60335-2-40:2022

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ZRT510 refrigerant sensor module is a smart infrared type sensor module, using non-dispersive infrared (NDIR) principle to detect the existence of refrigerant, with good selectivity and non-oxygen dependent. It is a compact high performance sensor module made by combining mature infrared gas detection technology with micro machining and sophisticated circuit design. It is easy to use with excellent performance.


  • HVAC
  • Industrial process and safety monitoring


  • High sensitivity, high resolution, fast response
  • R485 output
  • Temperate compensation, excellent linear output, good stability, long lifespan
  • Anti-water vapor interference, anti-poisoning, direct Replacement for catalytic sensors



 Model No. ZRT510
Detection Gas R454B, R32, R290
Working voltage 5±0. 1 V DC,ripple<50mV  
Average current <70mA
Peakcurrent <300mA
Interfacemode XHQ-4
Output signal RS485(UART or PWM can be customized)
Data update 1s
Preheat time <30s
Response Time Under 25% LFL environment, the time reaching alarm point (7% LFL) is less than 10 seconds
Working T&H -40~85 ℃,0~100% RH
Storage T&H -40~85 ℃,0~100% RH
Sizes 75.4*57*21.5 mm (without connecting cable)
Weight 32.5g  (without connecting cable)
Lifespan >15years


Detection Gas


Detection Range








0~50% LFL


0.1% LFL


±2.5%LFL           (-20-60℃,0-95%RH)


* The description and specifications might be changed without notice. Please contact us for the latest information before placing orders.

Technical Support:

Customized technical design and function, LOGO and package are available without extra charge (including molding fee) for mass volume.

The sensors don't have sleeping mode. It can be set in program if needed.

All Winsen products go through strict inspections and tests to make sure they are 100% qualified before shipping out.

The sensor has been fully tested (not calibrated) before leaving the factory. However, after transportation and storage, the environment conditions change, and the surface of the sensor absorbs moisture, mixed gas, pollution matters, etc. It is recommended that customers perform aging and calibration after sensors become stable according to the program and use occasions of the whole device.

15﹪-90﹪RH without condensation,greater or less than this range or long-term high temperature and high humidity will affect the life of the sensor.

Our sensors are certified with CE, 3C, ROHS, anti-explosion, fire prevention, and coal mining safety according to different applications. And we provide assistance for new certification.

Many factors can cause the sensor to fail such as broken wires in transportation, poisoning, falling off of the sensitive material, damage to the heating wire (device), etc. Please find specific cause in each category with Winsen’s aftersales.

Winsen provides professional consultation and service before and after sales. We will recommend the best fitting sensor for your demand. If you have any problem, don’t hesitate to email us to

Due to high volume of daily incoming emails and time zone difference, we may not be able to reply your emails immediately. But we will reply to your inquiry in 24 business hours.