MQ9 Carbon Monoxide, Methane and LPG Gas Sensor Module
MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module
The MQ-9 gas sensor module has high sensitivity to Carbon Monoxide, Methane, and LPG. The sensitive material used in the MQ-9 gas sensor is SnO₂, which has lower conductivity in clean air. It detects gases by cycling high and low temperatures: at low temperatures (heated by 1.5V), it detects CO; at high temperatures (heated by 5.0V), it detects Methane, Propane, and other combustible gases while cleaning out previously adsorbed gases. MQ-9 is commonly applied in domestic gas leakage detectors, industrial gas detectors, and portable gas detectors.
Wire Connecting Method of MQ-9 Gas Sensor Module:-
- VCC: Positive pole (5V)
- GND: Negative pole
- DO: TTL switch signal output
- AO: Analog signal output
Specifications of MQ-9 Gas Sensor Module:-
- Input Voltage: DC 5V
- Power: 150mA
- DO Output: TTL digital 0 and 1 (0.1V and 5V)
- AO Output: 0.1–0.3V (relatively clean); highest concentration voltage is about 4V
Features of MQ-9 Gas Sensor Module:-
- Suitable for home or factory gas leakage monitoring devices
- Better sensitivity to Carbon Monoxide, Methane, and LPG
- High-quality dual-panel design with power indicator and TTL signal output instructions
- DO (TTL) output and AO (analog) signal output
- TTL output valid signal is LOW (can directly trigger microcontroller or relay module)
- Analog output voltage increases with gas concentration
- Four screw holes for easy mounting
- Long life, stable operation, fast response and recovery
* Product Images are shown for illustrative purposes only and may differ from actual product.
MQ-9 Carbon Monoxide, Methane and LPG Gas Sensor Module
The MQ-9 gas sensor module has high sensitivity to Carbon Monoxide, Methane, and LPG. The sensitive material used in the MQ-9 gas sensor is SnO₂, which has lower conductivity in clean air. It detects gases by cycling high and low temperatures: at low temperatures (heated by 1.5V), it detects CO; at high temperatures (heated by 5.0V), it detects Methane, Propane, and other combustible gases while cleaning out previously adsorbed gases. MQ-9 is commonly applied in domestic gas leakage detectors, industrial gas detectors, and portable gas detectors.
Wire Connecting Method of MQ-9 Gas Sensor Module:-
- VCC: Positive pole (5V)
- GND: Negative pole
- DO: TTL switch signal output
- AO: Analog signal output
Specifications of MQ-9 Gas Sensor Module:-
- Input Voltage: DC 5V
- Power: 150mA
- DO Output: TTL digital 0 and 1 (0.1V and 5V)
- AO Output: 0.1–0.3V (relatively clean); highest concentration voltage is about 4V
Features of MQ-9 Gas Sensor Module:-
- Suitable for home or factory gas leakage monitoring devices
- Better sensitivity to Carbon Monoxide, Methane, and LPG
- High-quality dual-panel design with power indicator and TTL signal output instructions
- DO (TTL) output and AO (analog) signal output
- TTL output valid signal is LOW (can directly trigger microcontroller or relay module)
- Analog output voltage increases with gas concentration
- Four screw holes for easy mounting
- Long life, stable operation, fast response and recovery
* Product Images are shown for illustrative purposes only and may differ from actual product.
Shipping Policies
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Guarantee/Warranty
All items are delivered with a standard warranty of minimum 15 days (unless otherwise specified in the product page) to protect the customers from any manufacturing defect. If you have any problems with your order, please notify us within this duration from the date of shipment of any defective product. You agree to pay for the return shipping on exchanges and returns and we will reimburse this cost upon verification of a defect with the product. We will replace or repair the damaged products at free of cost with shipping prepaid by us. In case, we do not have the product in stock to provide a replacement, we will issue a 100% refund. Furthermore, no warranty will apply if the Product has been subject to misuse, static discharge, neglect, accident, modification, or has been soldered or altered in any way.
To the product need to be exchanged, firstly, please send the photos of damaged products to us. We will estimate the damages then decide the best way to exchange or return the product. If the particular item is not in stock to replace, we will provide the full refund.
100% Refund/Replacement
We guarantee to provide accurate descriptions and high-quality product as mentioned in the website. In order to protect customers from shipping damage, item mismatch or parts missing, etc., we are providing 2 days time (From the date of order delivery) to report the complaint by going to my account section and then to your order, you will find an option for Request Refund. Our technical team will verify the submitted details visually and will issue RMA number to return the material. Once we received the product our experts will verify the issue reported and will send the replacement items to the customer shipping cost prepaid by us. In case, we do not have the product in stock to provide a replacement, we will issue a 100% refund. Furthermore, no warranty will apply if the Product has been subject to misuse, static discharge, neglect, accident, modification, or has been soldered or altered in any way. Due to the nature of the products we are selling and our strict quality policy, we are unable to offer order cancellation and return without a valid reason. ROBODIUM reserves the right to take the final decision on all refund request.
Changing or Canceling An Order
Need change something about your order or just want it canceled? You can ask us (by Email Only ) to change the items on your order, update an address or payment method, or just cancel it. Customer Service will get back to you by email within one business day regarding your request. Only orders that are still in status “Pending” or “Payment Verification” can be altered or canceled. If your order has already moved to a different status, you won’t be able to alter it or cancel it. In some cases, Order cancellation may attract 5% bank charges depending on the payment methods used by the customer. (It is because most of payment gateway providers collect their Commission even though order canceled and refunded.).Due to the nature of the products we are selling and our strict quality policy, we are unable to offer order cancellation and return without a valid reason. ROBODIUM reserves the right to take the final decision on all refund request.
Return Guidelines
Once we confirmed the faulty item cannot be repairable by the customer or by Remote Desktop (Team Viewer), we will issue the RMA Number, which you have to mention clearly on Shipping boxes. Do not write anything on the merchandise packaging (Product package). Defective unused merchandise will be replaced within 2 days of receipt. All returns must include a copy of the original packing list that came with your shipment.
Limits Of Responsibility
We accept no responsibility for improper installation of our products. Electrical polarity must be properly observed in hooking up electrical components.