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gas leak detector

0.25w 0.56" 7-Segment 0.96 OLED Module 1 Digit Display 1 Inch Wheel 1.5m 1.75mm filament 10 Pin Jumper 100% Copper 100ohm 10A 250VAC 10g 10K Potentiometer 10K Potentiometer Joystick 10k resistor 10mm LED 10s Audio 11mm Glue Stick 12 Key Matrix Keypad 12 Pixel LED Ring 12V 2A Power Supply 12V Adapter 12V Drill 12V Gear Motor 12V regulator 12V Relay Module 12x12mm Switch 13.56MHz RFID 13.56MHz RFID Tag 150RPM Motor 16 MHz Crystal 16-Key Capacitive Keyboard 16x2 LCD 18TPI Blade 1k resistor 1m resistor 2 channel 2.54mm Header 2.54mm Pitch 2.5mm 2.85mm filament 20 Compartment Box 20cm 20cm Test Lead 20K ohm pot 220ohm 24TPI Blade 25W 25W Soldering Iron 28BYJ-48 2x3W Stereo Amplifier 3-Axis Accelerometer Module 3-in-1 Kit 3-Pin Pot 30AWG 315MHz RF Module 330ohm 34mm Robot Wheel 360 Degree Servo 360° Servo Motor 38kHz IR Module 3D filament 3D Printer 3D printer material 3mm coroplast sheet 3mm LED 3V Coin Cell 3V Motor 3x4 Membrane Keypad 4 Digit 7 Segment Display 40 Pin Ribbon Cable 433MHz RF Pair Kit 470ohm 4P4C cable 4P4C female jack 4x3 Matrix Keyboard 4x3 Matrix Keypad 4x4 Membrane Keypad 4x4 Touch Sensor Module 4x6 cm 5 V Board 5.5x2.5mm Power Adapter 5050 SMD 5161AS 5mm LED 5v 5V Buzzer Module 5V DC Adapter 5V Gas Sensor 5V Power Adapter 5V regulator 5V RGB Strip 5V Stepper Motor 6 Compartment Box 6 pin switch 6-Pin Bluetooth 680ohm 6DOF Motion Sensor 6pcs Screwdriver Kit 6V regulator 7 segment display 7 Segment LED Module 7mm glue stick 8 Compartment Box 8 LED RGB 8mm LED 8x8 Dot Matrix Module 8x8 LED Matrix 8x8 LED Matrix Display 8Ω Speaker 90 degree header 9g Servo Motor 9V Battery 9V connector 9V DC Adapter 9V Power Adapter 9V SMPS Adapter A2 Cutting Mat AA battery abrasive paper AC-DC Adapter AC/DC Tester Access Control Card Access Control Key Fob Access Control Kit Acrylic Foam Tape Active Buzzer Module Active Low Output Addressable LED Addressable RGB LED Addressable RGB Ring Addressable RGB Strip adhesive notes adhesive stick Adventurer 3C air moisture sensor air monitoring system air quality device Air Quality Sensor alarm Alarm Sensor alcohol sensor Alkaline Battery alligator clip Alligator Clip Wire aluminum capacitor Ammonia Sensor analog analog control Analog Joystick Module Analog Piezo Module analog sensor Analog Water Sensor and circuit experiments. and household fixes. Angle Sensor Anti-static Tweezers Aquarium Pump arduino Arduino Bluetooth Arduino Button Kit Arduino Buzzer Arduino Cable Arduino Climate Sensor Arduino Color Sensor Arduino Compass Sensor Arduino Compatible Arduino Connector Arduino Display Arduino Encoder Arduino Flow Sensor Arduino Gas Sensor Arduino GPS Module Arduino GSM Arduino Header Arduino header pins Arduino IR module Arduino IR Sensor Arduino Joystick Arduino Keypad Arduino LED Matrix Arduino Light Sensor Arduino Mega Arduino Motor Arduino Motor Driver Arduino Nano Arduino Passive Buzzer Arduino Piezo Sensor Arduino Power Adapter Arduino power jack Arduino Pulse Sensor Arduino Rain Sensor Arduino RF Module Arduino RFID Arduino RFID Card Arduino RFID Module Arduino RFID Tag Arduino Sensor Arduino Servo arduino shield Arduino temperature sensor Arduino Tilt Sensor Arduino Vibration Sensor Arduino Water Flow Sensor Arduino Water Pump Arduino Water Sensor Arduino WiFi Module Arduino Wire Arduino/ESP32 Touch Input Module ASK RF Module astable ATmega2560 ATmega328P Audio Detection Sensor audio output Audio Sensor axial Ball Switch Sensor barrel jack battery cell battery clip Battery Pack bend sensor Bi-Metal Blade Binding Tape black filament Black Insulation Tape black plastic board blue filament Blue LED Bluetooth Module BO Motor BO2 Gear Motor Bosch Tool BPM Sensor Brass Spacer Brass Sponge Brass Standoff Brass Wool Cleaner breadboard Breadboard 400 Point Breadboard Compatible Breadboard Wire Breakaway Header breath alcohol sensor Butane Gas Detector Butane Sensor Button Cell buzzer buzzer module buzzer speaker Cable Tape capacitive sensor capacitor capacitor set carbon film Carbon Monoxide Sensor Carbon Steel Blade Cardboard Box Castor Wheel ceramic ceramic sensor Ceramic Vibration Sensor Cetus 3D Printer Cetus MK3 CH4 sensor Character LCD Module CJMCU WS2812 Black Module CJMCU WS2812 Module Class-D Audio Amplifier CNG detector CNG sensor CO Sensor CO2 Sensor Coin Motor Color Detection Module Color Sensor Combustible Gas Module common anode display Common Anode LED Common Cathode Common Cathode LED communication cable communication jack Compact 3D Printer Compact Saw Compass Sensor Compatible with 11mm diameter glue sticks and suitable for DIY projects Component Storage Component Storage Box Contactless ID Card Contactless RFID Token control control switch Copper copper wire Cordless Drill coroplast sheet Corrugated Box corrugated plastic sheet CR2025 Battery craft glue Craft Mat Crepe Tape crocodile clip Crocodile Clip Cable Cross Screwdriver Cushion Grip Screwdriver Cutting Mat Cutting Pliers Cutting Scissors cylindrical battery DC Battery DC Gear Motor DC jack dc motor DC Motor Driver Board DC Motor Driver IC DC Motor Wheel DC socket DC Vibration Motor DC Water Pump decoration Desoldering Pump Desoldering Wick development Development Board DHT11 Diagonal Cutter Digital Display Module Digital Measuring Tool Digital Multimeter digital sensor Digital Servo Motor Digital Temp Sensor Digital Temperature Sensor Digital Tilt Switch Digital Vernier Caliper diode kit DIP LED Distance Sensor DIY DIY 3D Printer DIY Adhesive DIY Clamp DIY Cutting Board DIY Electronics DIY fabrication material DIY Hardware DIY material DIY Measuring Tool DIY Motor DIY Organizer DIY Printer DIY Pump DIY Robot Base DIY Robot Wheel DIY Robotics DIY Robotics Motor DIY Soldering Set DIY Storage DIY Storage Box DIY Tool DIY Tool Blade DIY Tool Kit Double Sided Tape Double-Sided PCB DPDT switch Drone Arm Screw DS18B20 DS18B20 Temperature Sensor DT830D Dual Axis Sensor Dual H-Bridge Driver Dual H-Bridge Module Dual H-Bridge Motor Driver Dupont cable Dupont Jumper Wire Educational 3D Printer Educational Kit EFT Spare Part Electret Microphone Amplifier Electric Drill electrical switch Electrical Tape Electrical Tool electrolytic capacitor electronic Electronic Caliper electronic device Electronics electronics clip Electronics Organizer Electronics Plier Electronics Repair Kit Electronics Repair Tool Electronics Rework Electronics Storage Electronics Tape Electronics Tool Electronics Tool Kit Electronics Tweezer electronics work embedded audio device Embedded Systems Encoder Sensor Module environmental sensor ESD Tweezers ESP32 Color Sensor ESP32 GPS Module ESP32 Hydrogen Sensor ESP32 RGB Sensor ESP8266 ESP8266 ESP-01 ESP8266 ESP-12E ESP8266 GSM ESP8266 IoT Board ESP8266 NodeMCU ESP8266 WiFi Module ESP8266 Wireless Module ESP8266EX ethanol detector ethanol sensor EVA Foam Tape Fastener Nut FC-28 FC-37 Sensor FDM filament FDM Printer Female Header Female Pin Header Female-to-Female Jumper FF cable filtering capacitor Flame Retardant Flammable Gas Sensor FlashForge Printer flex sensor Flow Detection Module Flow Rate Sensor Flux Coated Flux Paste Flux-Assisted Foam Tape Force Sensitive Resistor Force Sensor FR4 FSR Sensor full size breadboard furniture repair Furniture Wheel Gas Detector gas leak detector Gas Leakage Detector Gas Leakage Sensor gas sensor Gear Motor Geared DC Motor Geared Stepper Motor General Purpose Scissors Glue Gun Refill glue gun stick Glue Sticks GNSS Receiver GPIO Breakout Board GPRS Module GPS Module Green LED green plastic board GSM Module GY-271 Sensor GY-273 Module GY-521 Accelerometer Module Gyroscope Accelerometer Module h-bridge H2 Gas Detector Hacksaw Blade Hall Effect Flow Sensor Hand Saw Hand Saw Blade Hand Tool Blade Hand Tool Kit Haptic Motor Hardware Organizer HC-05 HC-SR04+ HC-SR501 PIR Sensor Heart Pulse Sensor Heart Rate Monitor Sensor Heartbeat Sensor Module Hex Nut Hex Screw Hex Standoff High Torque Motor High Torque Servo High/Low Trigger HMC5883L Sensor Holding Tool hook up wire Hookup Wire hot glue stick Hot Melt Adhesive HSS Blade Human Body Touch Sensor Human Motion Sensor Humidity Sensor Hydrogen Detection Sensor Hydrogen Gas Sensor I2C LCD Display I2C OLED Display ic Ideal for prototyping Impact Drill Indicator LED Industrial Water Flow Sensor Infrared Reflective Module Infrared Remote Control Module Infrared Sensor Insulation Tape IoT IoT Board IoT Development Board IoT Module IoT sensor IoT Switching Module IR Decoder IR LED Transmitter IR Obstacle Sensor IR Receiver IR remote sensor IR Remote Transmitter Module Iron Holder Irrigation Sensor ISD1820 Module Jewelry Plier jumper clip Jumper Wire jumper wires Junior Blade Junior Hacksaw Keypad Module Knock Sensor KY-005 IR Transmitter KY-006 Buzzer KY-006 Module KY-036 Metal Touch Sensor KY-038 Sound Sensor KY-040 Encoder l293d L293D Driver Module L293D IC L293D Motor Driver L298 Motor Driver L298N 2 Channel Driver L298N H-Bridge Module L298N Module L298N Motor Driver Lab Use Large Organizer Box laser laser diode LCD Caliper LCD Display LCD1602 LDR Module LDR sensor learning resistor color codes LED display LED Dot Matrix Display Level Detection Module light dependent resistor light emitter Light Frequency Sensor Light Sensor linear potentiometer linear regulator Liquid Flow Meter Liquid Level Sensor Lithium Battery LM35 LM393 LM393 Comparator LM393 Sensor LM393 Sound Sensor LM7805 LM7806 LM7812 Location Tracking Module Lock Nut Long Nose Plier Low Smoke LPG Gas Sensor LPG Sensor M3 Nut M3 Screw M3x12mm Screw M3x30mm Screw M6×60 Screw Machine Nut Machine Screw Magnetometer Module Magnifier Stand Maintenance Kit Male Header Male to Female Male to Male male to male cable Manual Vacuum Masking Tape Master Slave Module Matrix Input Module Matrix Keyboard Module MAX4466 Microphone Module MAX7219 Dot Matrix MAX7219 LED Matrix Module Measuring Ruler Membrane Switch Keypad memo pad Metal Base Metal Cutter Metal Cutting Blade metal film Metal Gear Motor Metal Gear Servo Metal Scale Metal Touch Module methane sensor MF cable MFRC522 MFRC522 Card MG90S Servo MG995 Servo MG996R Servo Micro Clamp Micro Gear Motor Micro Long Nose Plier Micro Pump Micro Servo Micro Servo Motor Microcontroller Microcontroller Board Microphone Module Microphone Sensor Module MIFARE Key Fob mini breadboard Mini Castor Mini Digital Amplifier Mini Grip Clamp Mini Hacksaw Mini Hacksaw Blade Mini Motor Mini Plier Mini Robot Wheel Mini Screwdriver Set Mini Stepper Motor Mini Water Pump MM cable MMA7361 Accelerometer modular connector module Momentary Switch Motion Detection Sensor motor motor driver Motor Wheel Mounting Hardware Mounting Screw Mounting Spacer Moving Box MPU6050 Sensor Module MQ sensor MQ-2 Gas Sensor MQ-2 Sensor MQ-3 MQ-3 sensor MQ-4 MQ-4 sensor MQ-6 sensor MQ-7 sensor MQ-8 Gas Sensor MQ135 MQ2 Smoke Detector MQ6 MQ7 MQ8 Sensor Module Multi-color multimedia speaker Multipurpose Scissors N20 Motor N20 Motor Wheel N20 Wheel natural gas sensor ne555 Needle Nose Plier Neo-6M GPS NeoPixel Black PCB NeoPixel LED Module NeoPixel LED Strip NeoPixel Module NeoPixel Ring 12 LED NFC Key Tag NFC Module NFC Reader Module NFC RFID Tag NiMH Battery NodeMCU Noise Sensor NOx Sensor NPN transistor Numeric Display Numeric Input Module Numeric Keypad Module Nylon Spacer Obstacle Detection Module Office Scissors office stationery OLED Screen Module on off switch on/off switch Onboard Mic one wire sensor One Wire Temperature Sensor Open-Source Hardware optical Optical Encoder Sensor Organizer Box Orientation Sensor oscillator packaging Packaging Box Packaging Tool Painting Tape PAM8403 Amplifier Board Panasonic Battery Paper Cutter Paper Tape Parts Organizer passive Passive Buzzer Passive Buzzer Module passive component pcb PCB Connector PCB Helping Hand PCB Holder PCB Masking PCB Mount Kit PCB Repair PCB Repair Tool PCB Rework PCB Screw PCB Spacer PCB wire PE Foam Tape Phillips Screw Phillips Screwdriver photoresistor Photoresistor Module Piezo Buzzer Module Piezo Vibration Sensor piezoelectric sensor Pin Header Pipe Flow Detection Module PIR Motion Sensor PLA filament Plastic Clamp Plastic Gear Motor Playback Module Plywood Chassis PNP transistor polarity reversing switch polarized capacitor polishing paper pollution detector polypropylene board polypropylene sheet portable power Position Sensor post-it notes potentiometer power connector Power Supply power supply IC power switch Power Tool Precision Cutting Mat Precision Cutting Tool Precision Measuring Tool Precision Plier Precision Ruler Precision Screwdriver Set Precision Tool Precision Tweezers Pressure Sensor Printer Cable Professional Drill Professional Tool Kit Programmable LED Programmable RGB LED Strip Propane Sensor Prototype Board Prototyping Prototyping Cable prototyping clip prototyping shield Proximity Sensor PS2 Joystick Pulse Detection Sensor pulse generator Pulse Rate Sensor Pulse Sensor Amped Push Button push button switch PVC Tape pwm PWM Buzzer PWM Servo Rain Drop Sensor Rain Sensor Module Raspberry Pi GPIO RC Servo RC522 RC522 RFID Kit rechargeable battery rectifier diode Red LED red plastic board Reduction Stepper Motor relay module Remote Receiver Repair Repair Tool Repair Tool Kit resistance Resistive Soil Sensor resistor Retractable Knife RF 433MHz Module RF Communication Module RFID Card RFID Card Reader RFID Key Fob RFID Kit RFID Reader RFID Reader Module RFID Tag System RGB Color Sensor RGB LED RGB LED Ring 12x RGB Recognition Module RGB Sensor RH sensor right angle header RJ11 cable RJ11 connector RJ12 Chassis Robot Car Chassis Robot Motor Robot Motor Controller Robot Sensor Robot Wheel robotics Robotics Chassis robotics material Robotics Motor Robotics Servo rocker switch Rotary Encoder Module Rotary Pot Round Force Sensor Round LED Rubber Wheel sanding sheet sandpaper Satellite Navigation Module Self Healing Mat Self Oscillating Buzzer semiconductor semiconductor kit sensor SG90 Servo Shipping Box Shock Sensor Side Cutter Side Shaft Motor Silicone Wire SIM800L SIM900A Single Channel Relay Single Color LED Matrix single core wire single digit display slide switch Small Parts Box Smart Car Smart Car Motor Smart Car Platform Smart Car Wheel Smart Card RFID Smart Key Fob Smoke Detector Smoke Sensor Smoke Sensor Module SMPS Adapter SMS Module SnO2 Sensor Socket Header Soil Moisture Sensor Solder Braid Solder Removal Solder Sucker Solder Tip Cleaner Soldering Accessory Soldering Cleaner Soldering Flux Soldering Helper Soldering Kit Soldering Stand solderless Songle SRD-12VDC-SL-C sound Sound Board Sound Detector Module Sound Module Sound Sensor Sound Sensor Module Spacer SPDT Relay speaker Speed Sensor Spring Clamp Spring Holder SPST switch Square Force Sensor SSD1306 OLED Display Stainless Steel Caliper Stainless Steel Scale Standoff Spacer Stanley Knife Stanley Screwdriver Set Steel Cutting Blade Steel Ruler STEM Printer stepper motor Stepper Motor Driver sticky notes Storage Box Storage Carton Stranded Wire study notes Submersible Pump surface finishing SW-420 Sensor SW-520D Sensor switch kit switching switching transistor Swivel Wheel T-Type Adapter Tactile Switch Tank Level Sensor TCS230 Module TCS230 Sensor TCS3200 Color Sensor TCS3200 Sensor Technician Tool Set Teflon Tip telephone adapter telephone extension cable Telephone Style Keypad Temperature Sensor test clip testing thermal sensor Third Hand Tool Threaded Spacer Through Hole Through Hole LED Tiertime Printer Tilt Sensor Module timer ic Tip Cleaning Ball TM1637 Display Module TO-92 regulator TO-92 transistor toggle switch touch Touch Detection Sensor Touch Sensor toxic gas sensor transistor kit Triple Axis Accelerometer Triple Axis Compass TSOP sensor TSOP1838 TTP223B TTP229 Touch Keypad Tweezers Tyre Wheel UART Bluetooth UART GPS Sensor Ultrasonic Sensor UNO Programming Cable uno shield USB A to B USB Cable USB Interface Utility Scissors Variable Resistor Vibrating Motor Vibration Detection Module Vibration Motor vibration sensor Vibration Sensor Module Voice Recorder voltage regulator VOM Wall Power Supply Water Detection Sensor Water Flow Sensor Water Level Sensor Waterproof Temperature Sensor wearable Weather Sensor WH148 Potentiometer white filament White LED white plastic sheet WiFi IoT Module WiFi Module Wire Cutter Wire Handling Tool Wire Management Wire Wrapping Wireless Module Wireless Remote Module Wireless Transmitter Receiver Kit Wood Cutting Blade Wooden Chassis Workshop Clamp Workshop Mat Workshop Tool WS2812 Breakout Board WS2812 LED Ring WS2812 RGB LED WS2812 RGB LED Black WS2812B WS2812B LED Strip yellow filament Yellow LED yellow plastic board YF-G1 Sensor YF-S401 Sensor YL-69 YL-83 Rain Module Zener diode