3pcs MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor Detecting MQ Sensor DIY for Safety Detection System

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$6.99

Ex Tax: $6.99

Stock: In Stock
Model: EB0043594
SKU: EB0043594

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Overview:

- The gas sensing material used in the MQ-4B methane sensor is tin dioxide (SnO2) with lower conductivity in clean . When there is a flammable gas in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of flammable gas in the increases. The change in conductivity can be converted to an output signal corresponding to the gas concentration using a simple circuit.

- The MQ-4B methane sensor has high sensitivity to methane and strong anti-interference ability to alcohol and other disturbing gases.

Characteristics:

This product has good sensitivity to methane in a wide concentration , and has the advantages of long life, low cost, and simple driving circuit.

Application:

Widely used in household gas leak alarms, industrial combustible gas alarms and portable gas detectors

3pcs-MQ-4B-Sensor-Gas-Sensor-CO-CO2-Smoke-Methane-Sensor-Detecting-MQ-Sensor-DIY-for-Safety-Detectio-1682602

Basic Circuit:

The figure above shows the basic test circuit for the MQ-4B sensor. The sensor requires two voltages to be applied: voltage (VH) and test voltage (VC). The VH is used to provide a specific operating temperature for the sensor, either DC or AC. The VRL is the voltage across the load resistor (RL) of the sensor in series. VC is the voltage for testing the load resistor RL and requires a DC power supply.

Package Included:

3 x MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor

Shipping Time

After you successfully placed an order at RenhotecIC.com, you will receive a confirmation email with your invoice. Once your order is shipped, you will be emailed with the tracking information of your package. Also, you can choose your preferred shipping method during the checkout process. Kindly advise: please select DHL/FedEx if you need our product urgently.

The timeline of the whole shipping process is shown below:

The total delivery time is calculated from the time your order is successfully placed to the time received. Total delivery time is broken down into processing time and shipping time.

Processing time: The time it takes to prepare your item(s), includes preparing your items, performing quality inspections, and packaging for shipment. Normally, the processing time is 1-3 days (Only include Monday to Saturday ) after getting your order.

Shipping time: The time for your item(s) to travel from our warehouse to your destination. The shipping time depends on the shipping method you chose. Please refer to the shipping rate section for details.

Shipping Rates

You could choose the shipping method based on your preference during checkout, different shipping methods will apply different rates and shipping times. Please check the following chart for detail:

Shipping Method Shipping Rates Shipping Times
Flat Shipping (Promotion)
$10 About 5-30 Working Days to Worldwide (Only include Monday to Saturday )
Standard Express（0.5KG starting price listed）
Based On Weights About 5-15 Working Days to Worldwide (Only include Monday to Saturday )
Priority Express （0.5KG starting price listed）
Based On Weights About 3-7 Working Days to Worldwide (Only include Monday to Saturday )

In addition, the transit time depends on where you're located, the shipping method you choose, and where your package comes from. We will keep you informed of any problems here to help you get your order as soon as possible.

If you want to know more information, please contact the customer service by contact form or sales@renhotecic.com. We will settle your problem as soon as possible. Enjoy shopping!