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
5pcs 3S NiMH NiCd Rechargeable Battery Charger Charging Module Board input DC 5V
$26.35Power Supply ModuleAdd to cartDescriptions3-Cell(3S) VersionInput voltage:DC 4.5V-5.5V(Recommend DC 5V)Charging voltage about:4.05V-5.1VCharging current about:230mA-240mAUSB power protectionShort circuit protection and zero volt battery activationBattery protectionOperating ambient temperature:-40° to +85°Storage temperature:-65° to +125°Size:30x 15 x 4mmNoteThe output voltage cannot be measured with a multimeter without a battery. But can be observed with an oscilloscope.Applicationskids toys carDigital CamerasSolar chargingBluetooth ApplicationsAudio equipmentDigital CameraElectronic …
5pcs 3S NiMH NiCd Rechargeable Battery Charger Charging Module Board input DC 5VRead More
5Pcs/Pack 5V 1000mA 165*165mm Monocrystalline Solar Panel Cells with Positive&Negative Cables
$85.54Smart Robot & Solar PanelAdd to cartFeaturesProvide you with high conversion rate and incredibly efficient output.Excellent performance even under the weak sunlight.Portable and solid casing.Application:to charge, for home lighting and different kinds of low-power appliances, for science projects, for solar powered water pump, small solar power system, etc.SpecificationsType:Monocrystalline Size:165*165mmCurrent:1000mA Net Weight:about 600g one packPackage Content:5Pcs x Poly Solar PanelVoltage:5VMPN:Does Not ApplyPackage …
Waveshare 1.54 inch ink Screen Module 152×152 Electronic Paper SPI interface Yellow Black and White 3-color Display
$45.91Display ScreenAdd to cartDocumentsSchematic:Click here to openSample tutorial:Click here to openDatasheet:Click here to openGithub:Click here to openFeaturesNo backlight is needed, and the display content of the last screen can be kept for a long time after power offVery low power consumption, basically only consumes power when refreshingSPI control interface, can be connected to Raspberry/Nucleo and other main control …
Geekcreit DIY Creative Electronic Watch Kit 51 Single-chip LED Digital Tube Clock Training Production Kit
$15.30DIY Electronic KitsAdd to cartDescriptionName:LED Electronic Watch KitPower supply:CR2025 3V button battery (available for testing, there are inevitably extra factors causing insufficient power.)Display:LED red digital tube displaySize:52*52*18mmInstallation:the board need to solder yourself and then assembly the caseFunction:You can press the digital tube button when need to wacth time; it will enter the power saving mode automatically after 5 seconds. …
QFN32 QFP32 Converter SMD To DIP Adapter PCB Universal Board
$3.56Expansion Board & ShieldAdd to cartQFN32 QFP32 Converter SMD To DIP Adapter PCB Universal BoardSpecificationDimension:20.25 x 40.64mm / 0.79inch x 1.60inchThickness:1.5mmPanel:FR4DescriptionThe PCB board has two sides.A side for pin pitch size 0.80mm, B side for pin pitch size 0.80mm.It can be used to convert QFN32/QFP32 (600mil width, 2.54mm pin pitch).You can solder filter capacitors or resistors to increase stability and …
QFN32 QFP32 Converter SMD To DIP Adapter PCB Universal BoardRead More
YJ0007 180W Car Stereo Audio Amplifier Power Boost Board Single 12V input Conversion Double 32V Output
$52.41Boost & Buck ModuleAdd to cartDescriptionAll parts and components of this product are original products, unpretentious and pure in quality; using high-quality original parts not only guarantees safety and quality, but also has a long service life, and more importantly, it is a strong guarantee that the actual performance can reach the design goals.Features1. All components are genuine.2. The main …
Reviews
There are no reviews yet.