ShenzhenYijiajie Electronic Co., Ltd.
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram |
| Supply Ability | 1500 |
| Delivery Time | 5-8 days |
| Packaging Details | Box pack |
| Response time τ63 | 120 seconds |
| Resolution | 0.01% RH |
| Measurement range | -10°C ~ +60°C |
| Accuracy | ±0.8°C |
| Model Number | SCD41 |
| Brand Name | YJJ |
| Place of Origin | Switzerland |
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Product Specification
| Payment Terms | L/C, D/A, D/P, T/T, Western Union, MoneyGram | Supply Ability | 1500 |
| Delivery Time | 5-8 days | Packaging Details | Box pack |
| Response time τ63 | 120 seconds | Resolution | 0.01% RH |
| Measurement range | -10°C ~ +60°C | Accuracy | ±0.8°C |
| Model Number | SCD41 | Brand Name | YJJ |
| Place of Origin | Switzerland | ||
| High Light | SCD41 CO2 humidity sensor ，indoor air quality monitor ，photoacoustic temperature sensor | ||
Product Description:
YJJ SCD41 Photoacoustic CO2 Temperature Humidity Integrated Sensor for Indoor Air Monitoring
Features:
1. Core Parameters (25℃, 5V power supply)
1. CO₂ (Main Measurement)
Measurement Range: 400–5000 ppm (Can measure 0–40000 ppm, calibrated at 400–5000 ppm) Accuracy:
400–1000 ppm: ±(50 ppm + 2.5% reading)
1001–2000 ppm: ±(50 ppm + 3% reading)
2001–5000 ppm: ±(40 ppm + 5% reading)
Response time τ63: 60 s
Resolution: 0.1 ppm
2. Humidity (Integrated SHT4x)
Measurement range: 0–95% RH (no condensation)
Accuracy: ±6% RH (typical)
Response time τ63: 120 s
Resolution: 0.01% RH
3. Temperature (Integrated SHT4x)
Measurement range: -10°C ~ +60°C
Accuracy: ±0.8°C (typical)
Resolution: 0.01°C
4. Electrical and Interface
Power supply: 2.4–5.5 V (recommended 3.3V/5V)
Average current: 3.2–4 mA (5s period); low power consumption 0.5 mA (5min period)
Interface: I2C (address 0x62), digital output
Life: 10 years +, factory calibration, supports self-calibration ASC
II. Working Principle
CO₂ Detection (Photoacoustic NDIR): Infrared light source emits 4.26μm pulse → CO₂ molecules absorb → generate pressure wave (sound wave) → microphone detection → concentration conversion; strong anti-interference, long lifespan, no consumables required.
Humidity and Temperature Detection (SHT4x): CMOSens® chip, capacitive humidity + bandgap temperature, used for on-chip compensation of CO₂ signal, and outputs independent temperature and humidity data Sensirion.
III. Main Applications (Core Scenarios)
1. Indoor Air Quality (IAQ) Monitoring (Most Common)
Residential / Office / Classroom: Ventilation linkage when CO₂ > 1000 ppm, prevents drowsiness, enhances concentration
Fresh air system / Air conditioner: Dual control of CO₂ + temperature and humidity, energy-saving and comfortable
Smart Home: IoT devices, air purifiers, smart panels integration
2. Commercial and Construction
Shopping malls / Hotels / Conference rooms: CO₂ monitoring in densely populated areas, compliant with RESET®/WELL™/ California Title 24 standards
Archives / Museums: Stable control of temperature and humidity, protection of cultural relics
3. Agriculture and Horticulture
Greenhouses / Sheds: CO₂ (800–1500 ppm) + temperature and humidity synergy, improves crop yield
Plant incubators: Precise environmental control
4. Industrial and Portable Equipment
Portable gas analyzer: Compact, low power consumption, battery-powered for several months
Clean rooms / Laboratories: Low concentration CO₂ monitoring
Automobile cabin: HVAC air quality optimization
Specifications:
| Typical precision | ±(50 ppm + 5 % |
| Specified range | 400 ppm / 2'000 ppm |
| Low power single trigger | There is no |
| Packing type | Take-up / 600 |
| size | 10.1 x 10.1 x 6.5 mm3 |
| T90 Response Time | ≤ 30s |
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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