* Item Description
MQ-9 Carbon Monoxide CO Gas Alarm Sensor For Arduino Detection Module
Can be used for the family and the factory’s gas leakage monitoring device, suitable for liquefied gas, propane, propane, methane, smoke and other detection
1, using high-quality dual-panel design, with power indicator and TTL signal output indication
2, with a DO switch signal (TTL) output and analog output AO
3, TTL output valid signal is low. (When the output low signal light, can be directly connected microcontroller or relay module)
4, analog output voltage with higher concentration the higher the voltage.
5, liquefied petroleum gas, natural gas, city gas, smoke have better sensitivity.
6, there are four screw holes for easy positioning
7. Product dimensions: 32 (L) * 20 (W) * 22 (H)
8, with a long life and reliable stability
9, rapid response recovery characteristics
Input voltage: DC5V
Power (current): 150mA
DO output: TTL digital 0 and 1 (0.1 and 5V)
AO Output: about 0.1-0.3V (relatively clean), the highest concentration voltage 4V
Special note: After the sensor is powered, needs to warm up about 20S, measured data becomes stable, sensor fever is a normal phenomenon, because the inside with an electric wire, if not normal hot.
|Country||Approx. Delivery time|
Hong Kong Post Air-Mail
|United States, United Kingdom, Australia||7-14 working days|
|Canada, Western Europe, Northern Europe, Central Europe||7-21 working days|
|Other Country||15-30 working days|
|UPS or DHL||North America, Australia, Western Europe, Northern Europe, Central Europe||3-7 working days|
|Other Country||5-10 working days|
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|Shipping Company||Shipping Cost||Estimated Delivery Time|
|3 - 7 days|
|3 - 7 days|
|5 - 14 days|
|Post Air Mail||Free Shipping||15 - 45 days|
|Return Policy||If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.
N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
|Seller Service||On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).|