G4(P)红外光谱的吸收特性进行浓度测量，内部按照双波长光路设计，无氧气依赖性和催化传感器系列红外气体传感器是基于 NDIR 原理设计的智能微型气体传感器，它利用气体对特定的中毒现象，寿命长，准确度高，性能稳定。该传感器具有模拟和数字两种信号输出接口，能直接输出经线性化处理和温度补偿的气体浓度值信号，更易于使用。

The G4(P) series infrared gas sensor is an intelligent micro gas sensor designed based on the NDIR (Non-Dispersive Infrared) principle. It measures gas concentration by utilizing the absorption characteristics of gases at specific infrared wavelengths. Featuring a dual-wavelength optical path design, it operates without oxygen dependency and is immune to the poisoning effect common in catalytic sensors, offering long service life, high accuracy, and stable performance.This sensor provides both analog and digital signal output interfaces, delivering pre-linearized and temperature-compensated gas concentration values for immediate use, ensuring superior user convenience.