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Description
MQ-135 Sensor Detecting Module by DaguRobot
Detects Air Quality (Concentration of CO2, Alcohol, Benzene, NOx, Ammonia, etc.)
Working Voltage: 3.3 V
Output Type: Digital signal, Analog signal
Interface mode: ph2.0 - 4p
The DaguRobot MQ-135 Sensor Detecting Module detects air quality (concentration of CO2, alcohol, benzene, NOx, ammonia, etc.). It comes with two outputs digital signal and an analog signal. It runs on a 3.3 V working voltage and the interface mode is ph2.0 - 4p.
Note: MQ-135 can detect all the gases listed above, but cannot distinguish them. If you want to target one gas specifically, it is best to choose another sensor. The sensor also requires a heater to warm up the sensor. It is not recommended to use it with a smaller battery, as it will quickly run out of battery power.
If you are not satisfied for whatever reason with a Product you bought on the Site, it is possible to return it for refund within 30 days from the date you received it unless otherwise indicated in the Product listing. You must first advise the Vendor associated with your order in your account to obtain a return authorization (‘’RA’’) number before returning a Product. (‘’RA’’) numbers are valid for 30 days, within which time the returned Products should be received by the Vendor. No returns will be accepted without having previously obtained an (‘’RA’’) number. The Product must then be returned in its original packaging (in perfect condition for resale) with its receipt and your (‘’RA’’) number. Reimbursement will be denied for any Products which do not conform to the above mentioned conditions.
Build-it-yourself Robot Parts are not refundable once assembled. Robots & Kits requiring assembly or soldering are also not refundable once assembled, soldered or modified in any way. All sales of robotic software and apps are final and cannot be refunded or exchanged. Returns are not accepted on special orders and clearance items except when they are found defective, in which case the Product may be repaired or replaced at the Vendor’s discretion. 20% Restocking fees may apply if you are returning a large quantity of the same Product that was ordered specifically for you from the manufacturer.
Please note that all items will be reimbursed within 7 to 14 days of receiving the Product (shipping fees excluded). You must also cover the cost of returning the Product. Shipping fees will only be refunded if the return is a result of a shipping error on our part. Cleaning fees of USD 100 may also be charged if a domestic robot is returned and has not been properly cleaned.
