Fangrui Product Details Fangrui Product Details Fangrui Product Details The -z19e Carbon Dioxide Gas Sensor (hereinafter Referred To As The Sensor) Is A General-purpose Intelligent Small Sensor. It Has Two Products: Pin And Terminal. It Uses The Principle Of Non-dispersive Infrared (ndir) To Detect Co2 In The Air And Has Good Selectivity. No Oxygen Dependence, , Etc. The Sensor Is A High-performance Sensor Made By Closely Combining Infrared Absorption Gas Detection Technology With Precise Optical Circuit Design And Sophisticated Circuit Design. High Sensitivity, Low Power Consumption Excellent Stability Temperature Compensation, Excellent Linear Output Provide Serial Port (uart), Pwm Waveform And Other Output Methods Long Lasting Anti-water Vapor Interference, No Poisoning Application: Hvac Equipment Air Quality Monitoring Equipment Fresh Air System Air Purification Equipment Smart Home School Parameters: Product Model: -z19e Detection Gas: Carbon Dioxide Power Supply Voltage: Dc(5.0 +/- 0.1)v Average Current: Less Than 40ma (@5v Power Supply) Current: 125 Ma (@5v Power Su