Model: ZRP820
Detection principle: Infrared principle
Characteristics: Excellent anti-interference ability, able to effectively eliminate false alarm sources;
Output signal: UART

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ZRP820 can quickly respond to open flames generated by the combustion of hydrocarbons, while eliminating a large number of false alarm sources, providing continuous protection for fire warning. ZRP820 adopts a dual channel design, which can simultaneously monitor real fire and the infrared radiation generated by surrounding environmental interference. Combined with advanced flame recognition algorithms, it can achieve rapid response of open flame detection while effectively eliminating false alarm sources


Large storage facilities, production workshops, industrial parks, petrochemicals, charging stations, material storage yards, etc


  • Excellent anti-interference ability, able to effectively eliminate false alarm sources;
  • Excellent Anti-EMC ability, able to effectively shield EMC interference;
  • Large window design, capable of achieving 90 ° wide area coverage;
  • Long distance flame recognition, with a maximum detection distance of up to 50 meters.


Model ZRP820
Detection object Hydrocarbon combustion
Operating voltage 12V
Operating current ≤10mA
Output signal UART
Operating environment Temperature: -10~55℃
Humidity: 15%~90% RH (without condensation)
Detecting distance 45±5m( n-heptane, 0.3m*0.3m, analytical grade)
Response time 1-10 seconds, used in non-interference environments and fast alarm situations; 10-20 seconds, used in less interference environments and reliable alarm situations; 20-30 seconds, used in complex interference environments and reliable alarm situations;

* 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.