20pcs MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor Detecting MQ Sensor DIY for Safety Detection System
$39.29
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Size Conversion
Inches
Centimeters
Please according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.
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
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
20 x MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor
Weight | 0.04 kg |
---|
Customers Also Viewed
PLZ 35-4400MHz Simple Spectrum Sweep Frequency Signal Source Power Meter CNC Aluminum Alloy Case
$116.99RF amplifierAdd to cartFeatures1. Signanl generator and spectrum analyzer frequency range:35M-4.4G2. MIN step:1K3. Output power(reference):0dBm@1G4. Frequency accuary(calibration):+-0.1k@1GHz5. Spectrum analyzer max liner input power:-10dBm6. Spectrum analyzer not damage input power:+10dBm7. MiniUSB power:+5V/0.3A8. Interface:USB, SMA@50┯9. Size(L*W*H):88*59*13mm10. Weight:140g11. Support XP/WIN7/WIN10 systemsPackage included1 x Spectrum analyzer 1 x USB cable
3Pcs DC-DC 15A Adjustable Boost Converter Constant Current Power Supply Module Car Charging Transformer LED Driver
$28.42Power Supply ModuleAdd to cartSpecificationModule name:400W boost constant current moduleModule nature:non-isolated boost module (BOOST)Input voltage:DC8.5V-50VInput current:15A (MAX) over 8A or module temperature over 65 degrees, please strengthen heat dissipationStatic working current:about 10mA (measured when 12V rises to 20V, the higher the output voltage, the higher the quiescent current will increase)Output voltage:10-60V continuously adjustable (suitable for applications where the input …
2Pcs 65*27mm Orange+Transparent Color Rubber Wheels for TT Motor Smart Chassis Car
$8.45Smart Robot & Solar PanelAdd to cartSpecifications– Diameter:65mm– Width:27mm– Centre hole:5.3 x 3.66mm (two sides is semicircle)– Material:Rubber(TPE)– Weight:about 50g– Color:Orange– For:TT motor/Smart Chassis Car DIY Part– Quantity:2PcsPackage Included2 x Orange Wheels
100 pcs DC 5V 5mW 650nm 6mm Laser Dot Diode Module Red Copper Head Tube
$44.86Other Module BoardAdd to cartFeaturesWorking life:more than 2000 hoursSpot mode:dot facula, continuous outputLaser wavelength:650nm (red)Copper head diameter:6mmLight powerSupply voltage:5V DCOperating currentOperating temperature:-36→ ~ 65→Power lead length:120mmShell material:brassSingle weight:1gPackage included100 x Laser diode dot
5pcs FXD-82B 12V Battery indicator Board Module Load 4 Digit Electricity indication with LED Lamp
$16.89Other Module BoardAdd to cartSpecificationsOn-board high-precision voltage detection chip and power supply voltage regulator chip onboard 4 power indicator LED lamp, divided into 3 colors display, red, yellow, yellow, green represents 20%, 50%, 80%, 100 (%) of the electricity Three Reserve a battery test interface and two mounting holes on-board high-precision voltage detection chip and power supply voltage regulator …
8FT 2.4m Strong Nylon Mesh Fishing Net Bait Easy Throw Hand Casting 3/4 w/ Sinker
$113.39Mesh & Wire ClothAdd to cartSpecificationName:Fishing NetMaterial:Nylon+GalvanizedColor:brownDiameter:2.4mFeatures1. Strong and durable material.2. Easy to use.3. Help you get more fish.Package Included1 x Fishing Net
1500 Pcs 2pF-0.1F Ceramic Capacitors Kit 30 Types with Component Box
$47.10Electronic Accessories & SuppliesAdd to cartFeatureCapacity:2pF-0.1μFCapacity:Quantity:Capacity:Quantity:Capacity:Quantity2pF:10:75pF:10:2200pF (2.2nF 222):103pF:10:82pF:10:3300pF (3.3nF 332):105pF:10:100pF (101):10:4700pF (4.7nF 472):1010pF:10:150pF (151):10:6800pF (6.8nF 682):1015pF:10:220pF (221):10:10nF (103):1022pF:10:330pF (331):10:15nF (153):1030pF:10:470pF (471):10:22nF (223):1033pF:10:680pF (681):10:47nF (473):1047pF:10:1000pF (1nF 102):10:68nF (683):1068pF:10:1500pF (1.5nF 152):10:100nF (0.1uF 104):10Package includes1500 x Ceramic Capacitors5 x Component Box
3pcs RobotDyn TP4056 Li-Ion Battery Charger Module with Protection Constant Current Constant Voltage
$11.02Power Supply ModuleAdd to cartDimensional drawing:Click here to openFeatureThe USB Li-Ion Battery Charger is a complete constant-current/constant-voltage linear charger for single-cell lithium-ion/Lithium Polymer (LiIon/LiPo) batteries. The Charger base on TP4056. The ideally suited for portable applications.And the Li-Ion Battery Charger can work within USB and 5V wall adapter. Other features include current monitor, under-voltage lockout, automatic recharge, and two …
Reviews
There are no reviews yet.