# MQ7传感器模块

## 概述

NOVA一氧化碳传感器MQ-7模块是用于一氧化碳气体泄漏检测，其灵敏度高、响应时间快、测量可以尽快。 传感器的灵敏度可以调节使用电位计。

## 参数

* 尺寸：40x23mm
* 输入电压：5V
* 工作温度：-10℃-50℃
* CO检测浓度：20ppm-2000ppm
* 接口模式：2510-3p
* 引脚定义：1-控制端 2-电源 3-地

## 接口说明

* 可用端口： A0、A1、A2、A3、S0、S1、S2、S3

## 使用方式

![](/files/-LWJhi6LmJBTInBvALs_)

## 示例代码

![](/files/-LWJhi6N8SCf0x0U_-l7)

[MQ7传感器模块示例代码](http://www.haohaodada.com/show.php?id=947448)

## 原理图

{% file src="/files/-LrC\_B-toV0BvHsgDFI7" %}
MQ7传感器模块原理图
{% endfile %}

## 尺寸说明

![](/files/-LWJhi6PMQXQhhzuRpho)

## 常见问题


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