30pcs MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor Detecting MQ Sensor DIY for Safety Detection System
$60.39
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
30 x MQ-4B Sensor Gas Sensor CO CO2 Smoke Methane Sensor
Weight | 0.06 kg |
---|
Customers Also Viewed
20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step Down Power Supply Buck Module
$16.24Power Supply ModuleAdd to cart20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step-Down Power Supply Buck ModuleFeaturesSize:8.6 x 12.33 mmInput voltage:DC 4.2 V – 10 VOutput:3.3 V, 800 mANote1.Boost modules or buck module indicate the operating voltage, Please do not exceed operating voltage, or it will be damaged easily!2.Boost module output voltage can only be greater than or equal to …
20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step Down Power Supply Buck ModuleRead More
XD-37 12V 72W Electronic Semiconductor Refrigeration DIY Air Cooling System Small Air Conditioning
$35.52Electronic Accessories & SuppliesAdd to cartFeatures1. Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques.2. Application:Fish tank cooling, computer water cooling, circulating water cooling, cooling equipment, etc.3. Use to Connect the pump and the power supply.4. Diy kits Thermoelectric Peltier refrigeration cooling system.Fast cooling, outstanding effect.5. Simple operation, strong practicability.DescriptionsNo noise, …
5pcs 2.4G NF-04 Wireless SPI Module BK2425 250k~2Mbps Transparent Transmission Receiver for Doorbell Remote Control Switch
$11.42Smart ModuleAdd to cartIntroductionNF-04 is a 2.4G wireless module with small size and on-board antenna. It has a high airspeed (up to 2Mbps), SPI interface, and a pure hardware module. It has high stability, high cost performance and good spectrum test characteristics. , small size, using all industrial grade components.NF-04 can be widely used in various Internet of …
10pcs Mini 2A DC DC Buck Converter 3.3-5.5V to 3.3V Module Step Down Voltage Regulator Module
$30.16Boost & Buck ModuleAdd to cartDescriptionINPUT 3.5V/1.4A; OUTPUT 3.3V/1.5AINPUT 3.7V/1.89A; OUTPUT 3.3V/2AINPUT 4.2V/1.67A; OUTPUT 3.3V/2AINPUT 4.5V/1.46A; OUTPUT 3.3V/2AINPUT 5V/1.4A; OUTPUT 3.3V/2A Input voltage 3.3-5.5V, output 3.3V (deviation ±2.0%)Long time maximum output current 1.8AShort time maximum output current 2.2AUp to 97% efficiency(@4.2V to 3.3V/500MA)Low Quiescent Current:20uAOvertemperature shutdown, input under-voltage protection, External Soft start, and short circuit protection. DC-DC Buck Step-down module …
10Pcs 10ml Metal Needle Empty Plastic Bottle Shisha E Cig Liquid Dropper
$10.80Lab ChemicalsAdd to cartSpecificationsMaterial:PECapacity:10mlSize:20X77mm / 0.79X3.0 inchNeedle Size:Inner Diameter =0.8mm, Outer Diameter =1.2mm, Length=12mmQuantity:10 pcsFeatures1. 10ml empty plastic bottle with metal needle2. Metal needle design,durable and easy to use3. Ideal for storing E cig liquid,solvents, light oils , eye drops, saline, etc.Package included10 X 10ml Empty Plastic Bottle With Metal Needle
Reviews
There are no reviews yet.