ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 2200 |
| Delivery Time | 5-8 days |
| Packaging Details | Palletized |
| Output voltage | V₀ = 0.7 ~ 1.6 V |
| Calibration gas | 0.3% methane |
| Response time (T₉₀) | 30 s |
| Recovery time | ≤ 60 s |
| Working temperature | -10℃ ～ +45℃ |
| Storage temperature | -20℃ ～ +50℃ |
| Environmental humidity | ≤ 90% RH |
| Atmospheric pressure | 650 ~ 800 mmHg |
| Brand Name | YJJ |
| Model Number | MQ-D1 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 2200 |
| Delivery Time | 5-8 days | Packaging Details | Palletized |
| Output voltage | V₀ = 0.7 ~ 1.6 V | Calibration gas | 0.3% methane |
| Response time (T₉₀) | 30 s | Recovery time | ≤ 60 s |
| Working temperature | -10℃ ～ +45℃ | Storage temperature | -20℃ ～ +50℃ |
| Environmental humidity | ≤ 90% RH | Atmospheric pressure | 650 ~ 800 mmHg |
| Brand Name | YJJ | Model Number | MQ-D1 |
| Place of Origin | CHINA | ||
| High Light | semiconductor gas sensor for home ，household gas leak detector ，MQ-D1 gas sensing sensor | ||
Product Description:
YJJ MQ-D1 Semiconductor Gas Sensing Sensor for Household Gas Leakage Detection
Features:
MQ-D1 semiconductor combustible gas gas sensor belongs to the MQ-D series of low-power models. It can detect various types of combustible gases and smoke. It has low cost and a simple circuit, and is mainly used for detecting gas leaks in household environments.
I. Basic Overview
Model: MQ-D1
Sensing Principle: Metal Oxide Semiconductor (MOS) gas sensor, resistance decreases as the concentration of combustible gas increases, and outputs an analog voltage signal
Packaging: Metal case TO packaging, 4 pins (heating wire pin 2 + signal electrode pin 2)
Core Positioning: Low-power wide-spectrum combustible gas detection, compared with traditional MQ-2 and MQ-4, with lower power consumption and smaller size
II. Detected Gas and Range
1. Detectable gases (broad-spectrum type)
Natural gas (methane CH₄), gas, liquefied petroleum gas (LPG), hydrogen, carbon monoxide (CO), acetylene, gasoline / kerosene vapor, alkanes, smoke, organic combustible vapor
2. Measurement range
500 ppm ~ 10000 ppm (0.05% ~ 1%), optimal sensitivity for methane
Calibration standard: 0.3% (3000 ppm) methane
III. Complete Electrical Parameters (Original Factory Specification Sheet)
1. Power Supply and Heating Parameters
Heating voltage VH: 6.0V DC
Loop working voltage Vc: ≤ 24V DC
Standard load resistance RL = 51Ω
Heating power consumption: Low-power design, much lower than ordinary MQ series sensors
2. Gas Sensor Electrical Characteristics
Clean air output voltage: V₀ = 0.7 ~ 1.6 V
Calibrated gas (0.3% methane) output voltage: V₁ ≥ 2.5 V
Response time (T₉₀): ≤ 30 s (gas reaches stable output)
Recovery time: ≤ 60 s (leaving gas and returning to baseline)
3. Working Environment
Operating temperature: -10℃ ～ +45℃
Storage temperature: -20℃ ～ +50℃
Environmental humidity: ≤ 90% RH (no condensation)
Atmospheric pressure: 650 ~ 800 mmHg
Long-term stability: 24-hour continuous working cycle, baseline voltage drift **±15% within**
4. Pin Definition (4-pin universal)
1, 2 pins: Heating wire (VH) (no polarity)
3, 4 pins: Signal terminals (Vc/RL) (at both ends of the gas sensor)
IV. Core Features of the Product
Low power consumption: Exclusive low-power heating design for D series, suitable for battery-powered and portable devices
High sensitivity: Good response to methane, liquefied gas, gas, smoke, and organic combustible vapor
Excellent long-term stability, long lifespan, and good resistance to environmental interference
Simple peripheral circuit, only requires heating power supply + voltage divider sampling, single-chip ADC directly reads
Low cost, suitable for mass production of large-scale household appliances
Preheating required (initial power-on preheating ≥ 5 minutes for stable measurement)
V. Main Applications and Application Scenarios
1. Core Application
Household gas leakage alarm (natural gas, liquefied gas, urban gas leak detection)
2. Expansion in all scenarios
Home security: Kitchen gas leakage detection, gas leak monitoring for gas water heaters / wall-mounted furnaces
Industrial and civilian: Small-scale combustible gas leakage inspection, pipeline gas leak detection
Environmental monitoring: Indoor combustible gas, smoke, and combustible vapor over-limit detection
Small appliance integration: Gas stove safety protection, gas safety module for drying / heating equipment
Simple equipment: Portable gas detector, garage / basement combustible gas monitoring, simple smoke alarm
Specifications:
| Heating voltage VH | 6.0V DC |
| Loop operating voltage Vc | ≤ 24V DC |
| Standard load resistance RL | = 51Ω |
| Heating power consumption | Low power consumption |
| Repeatability | < 2% |
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2006
Total Annual:
900000-1000000
Employee Number:
50~80
Ecer Certification：
Verified Supplier
Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph... Yijiajie Electronics is a full range of silicon pressure sensors from the United States, FREESCALE/, GE, MEAS, SMI, and a full range of sensing and control products from the United States pressure, temperature and humidity, gas flow, current, Hall effect, etc., Japan HAMAMATSU flame, UV sensors, ph...
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