The carbon dioxide gas sensor (hereinafter referred to as the sensor) is an intelligent general-purpose, small sensor, based on the principle of non-dispersive infrared (NDIR). It detects CO2 existing in the air, has good selectivity and no oxygen dependence, and has a long life. The sensor is a high-performance sensor produced by combining mature infrared absorption gas detection technology with precise optical path design and sophisticated circuit design.
Features
* Patent algorithm
* Small size, low power consumption, long life design
* Full range temperature compensation, maintenance-free
* A variety of interfaces are optional
Application
* Fresh air system
* Household Air Purifier
* Detector
* Smart home devices
Dimensions
Figure 1: Sensor Structure Diagram
Main Technical Specifications
Product Model | DSH04M-M5KSJD |
Detected Gas | Carbon dioxide |
Operating Voltage | 4.0~5.5VDC |
Average current | 17 mA (@5V supply) |
Peak current | 180 mA (@5V power supply) |
Interface level | 3.3V |
Measuring range | Selectable within the range of 0~1%VOL |
Measurement accuracy | ±(50ppm+5%) reading value |
Output signal | UART，PWM |
Warm-up Time | 3 minutes |
Response Time | T90 < 45 seconds |
Operating Temperature | 0~50℃ |
Operating Humidity | 0~95% RH (non-condensing) |
Weight | 4g |
Lifespan | >5 years |
Physical Dimensions | 33×17×10mm |
