Electrochemical sensor series Sensor specification Product Model Max zero drift (+20℃ to 1ppm +40℃) Repeatability Linearity, regression coefficient R2=0.999 15%~90%RH (relative humidity), non-condensing Pressure factor Baseline extent Long term drift < 5% signal loss / year Bias voltage Load resistance Built-In Filters 1 year (from the date of shipment) Output current polarity Positive current (define the output current of carbon monoxide and hydrogen sulfide sensor as positive) Ningxia MaiYa Sensor Technology Developme

Electrochemical sensor series Product size (unit: mm) R : reference electrode W: working/sensing electrode C : counter electrode Cross interference: Due to the difference of standard gas, cross-interference data is for reference only. The measurement of intersecting gases is not linear. There is no guarantee for accuracy of the measurement of the crossing gases. GAS Sensor response(ppm) Ningxia MaiYa Sensor Technology Development Co.,LTD

Electrochemical sensor series Declaration: 1. 4-Series electrochemical gas sensors are designed for gas leak monitoring and alarm. They are not suitable for long-term exposure to the gas to be measured or long-term on-line continuous detection and analysis instruments. 2. Sensor pins must be connected through a PCB socket, Welding the pin directly will damage the sensor. 3. Sensors should avoid contact with organic solvents, alcohol, paint, oil and high concentration of gas, including silica gel and other adhesives. 4. Electrochemical sensors with positive output current (such as CO, H2S, SO2,...