precision CO2 Sensor MHZ14A — Infrared Carbon Dioxide Module with Serial, PWM and Analog Outputs. 2025 revision, supplied with cable for quick integration. Designed for reliable electronic projects and control systems that require accurate, stable CO2 monitoring. Why choose this sensor Multiple output options: serial port, PWM and analog signal provide flexible integration with controllers, data loggers and automation systems. Infrared sensing for consistent CO2 detection: built on infrared measurement technology to deliver stable, precise readings over time. Ready to use from the box: supplied with cable and the 2025 model improvements focused on reliability and stable performance. Reliable electronic component: designed for repeated operation in monitoring and control applications where dependable performance matters. Key attributes Model: MHZ14A Sensing principle: infrared carbon dioxide detection Interfaces: serial port (UART), PWM output, analog output — choose the signal for your system Included: module and cable for easy connection Performance focus: precision, stable output and reliable operation emphasized in the 2025 update Form factor: compact module suitable for embedded projects and system integration Construction: durable module housing for consistent detection in typical electronic environments Compatibility and integration Works with a wide range of controllers and systems that support serial communication, PWM input, or analog voltage reading. Easy to integrate into microcontroller platforms, building automation, HVAC systems, data acquisition hardware, and custom control circuits. Cable included for straightforward wiring and testing. Typical use cases Indoor air quality monitoring: integrate the MHZ14A into classroom, office or home IAQ systems to help maintain healthy ventilation and occupancy comfort. HVAC and ventilation control: use the sensor outputs to drive fans, dampers or air exchanges based on measured CO2 levels to improve energy efficiency and air quality. Agricultural and greenhouse monitoring: provide CO2 measurement for plant environment control and optimization of growth conditions. What you get MHZ14A infrared CO2 module ( 2025 model) Connection cable for rapid setup Flexible interfacing via serial port, PWM, and analog outputs for system compatibility Design considerations Choose the output mode that matches your controller: serial for digital communication, PWM for simple digitallevel integration, or analog for direct measurement circuitry. Mount and position the module in a representative air stream for accurate ambient measurements. Follow standard safety and handling practices for electronic components during installation. Built for projects and systems that require dependable CO2 sensing, the MHZ14A offers flexible outputs, infrared detection, and stable performance in a compact, readytouse module.