Keyes Brick MQ-135 Air Quality Sensor Module Gas Sensor with Pin Header
$7.53
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Description
This is a commonly used air quality sensor. The gas sensing material used in this sensor is tin oxide (SnO2) with low conductivity in clean air. When there is a polluting gas in the environment where the sensor is located, the conductivity of the sensor increases as the concentration of the polluting gas in the air increases. The sensor is highly sensitive to ammonia, sulfides, and benzene vapors, and is ideal for monitoring smoke and other harmful gases. This sensor detects a wide range of harmful gases and is a low-cost sensor for a wide range of applications. It can be applied to harmful gas detection devices in the home and the environment.
The sensor is compatible with various microcontroller control boards, such as the microcontrollers. We provide a method for using this sensor in conjunction with the UNO R3 microcontroller. When using, the A0 terminal reads the analog value of the corresponding gas; the D0 terminal is connected to an LM393 chip (comparator), we can adjust the measured gas alarm critical point through the potentiometer, and output the digital value at D0. When the measured gas content exceeds the critical point, the D0 terminal outputs a low level; when the measured gas content does not exceed the critical point, the D0 terminal outputs a high level.
Specifications
Working voltage:DC 5V
Control signal:digital signal (D0)
Analog signal (A0)
Positioning hole size:3mm in diameter
Size:45*26*19mm
Weight:8.3g
Package Included
1 x MQ-135 air quality sensor
(the other items are not includes)
Weight | 0.028 kg |
---|
Customers Also Viewed
ESP8266 Development Kit with Display Screen TFT Show Image Or Word By Nodemcu Board DIY Kit
$32.79Smart ModuleAdd to cartDescriptionThis product kit can be used for some of the functions of the application of things, for example, display temperature and humidity, weather data display.TFT screen informationTFT screen and NodeMCU connection diagramPackage included1 x NodeMCU1 x 1.44 inch TFT screen8 x DuPont line
Band Pass RF Filter Band Pass 1420MHz BPF SMA-K
$93.91RF amplifierAdd to cartFeature1) Operating frequency:1420÷50MHz2) Insertion loss:1.8db3) Out-of-band suppression:40dB@50MHz4) Input impedance:50 ohm5) Output impedance:50 ohms6) Maximum input signal strength:13dbm (20mw)7) Input interface:SMA-K (SMA female)8) Output interface:SMA-K (SMA female)9) Dimensions:35*22*11mm10) Product weight:22gPackage includes1 x Band Pass RF Filter Band Pass 1420MHz BPF
XH-M548 2x120W Power Bluetooth Dual Channel Digital Amplifier Module TPA3116D2 Audio Amplifier Board
$28.42Amplifier BoardAdd to cartDescriptionThis product is a built-in TPA3116D2 chip with the power of 2*120W Bluetooth channel digital power amplifier board.SpecificationsParameterValueChipTPA3116D2Supply voltageDC12-24VOutput power120W*2 Supply currentMore than 3APower ratioMore than 90%Bluetooth moduleBTM835/CRS8635 (4.0 version)Transmission distanceMax 10M( without interfere)Vocal tract number2 channel (High bass control)switching frequency1.2MHzAppearance size98*80*18mmModels that support Bluetooth connectivityAndroid seriesIOS seriesWindows series Bluetooth connection methodTake mobile phone as …
3Pcs J03 LED Digital Time Delay Relay DC 6-30V on off Trigger Delay Timming Timer Switch Micro USB Power Supply 5V 12V
$32.79Relay ModuleAdd to cartFeatures1. Wide voltage power supply (6 ~ 30V), supports microUSB 5.0V power supply, easy to use;2. The interface is clear and simple, powerful, easy to understand, meet almost all your needs;3. The emergency stop function (“STOP’key);With reverse polarity protection, reverse polarity will not burn the product.4. Increase the sleep mode, if this mode is enabled, …
50pcs Scotch Lock Quick Splice 22-18 AWG Wire Connector Red
$8.99Terminal BlocksAdd to cartDescription50pcs Scotch Lock Quick Splice 22-18 AWG Wire Connector RedFeaturesEasy crimping with normal tool.Quick installation without striping wire job.Safety insulator tap.Suitable for Conductors in the rangeConductor CSA (Cross Sectional Area) 0.5 – 1.0mm², AWG (American Wire Gauge) 22 -18.Make Quick Connections without stripping.Easy crimping with normal tool, squeeze down the metal insert with pliers and …
50pcs Scotch Lock Quick Splice 22-18 AWG Wire Connector RedRead More
Excellway PCT-2 50pcs 2Pin Colorful Docking Connector Electrical Connectors Wire Terminal Block Universal Electrical Wire Connector
$54.66ConnectorsAdd to cart50pcs 2Pins Colorful Docking Connector Reusable Spring Terminal Block Electric Cable Wire Connector Main Features Wire connector. No wire loose, the risk of crisp tape, transparent and safe to see. With a test hole, measuring voltage, without removing the tape. Direct plug, insert the wrong can be pulled out, re-connected. Each contact point at the …
RIDEN 7 in 1 33V 10A Multifunction White OLED Digital Electrical Parameter Tester Ammeter
$26.23Power Supply ModuleAdd to cartSupport function:Voltage, Current, Time, Power, Temperature, Capacity, Energy, Run TimeFeatureOLED:WhiteVoltage:33VCurrent:10ANote:The measurement range are for reference match only, please check the value according to the voltage and current.Package includes1 x 33V 10A Electrical Parameter Tester
Reviews
There are no reviews yet.