The household laser methane module utilizes self-developed low-cost laser diodes and photodetectors as core components. Combined with stable temperature control algorithms, concentration inversion algorithms, and temperature compensation algorithms, it achieves precise measurement of methane concentration. The product is based on Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology and features an internal direct-irradiation optical path structure. It offers long absorption path length, high detection sensitivity, simplicity, and reliability, making it an ideal core component for combustible gas detectors.

Product Features
High precision
Miniaturized
Low power consumption
Intrinsic anti-interference (no response to non-methane gases)
Low cost
Calibration-free
Long service life (10 years)
Typical Applications:
Household Gas Leak Detection
Sensor Parameters:
| Category | Parameters | Specification |
| Measurement | Detection Principle | TDLAS |
| Gas Detection | Methane | |
| Detection Range | 0~100% LEL | |
| Measurement Error (@25℃) | ±3% LEL | |
| Response Time (T90) | <20s | |
| Operating | Minimum Resolution | 0.01% VOL |
| Operating Voltage | 3.3V~5.0V | |
| Operating Power | <500mW | |
| Long-term Output Drift | <2%/month | |
| Output Method | Standard TTL Serial Port | |
| Operating Temperature | -10~55℃ | |
| Operating Humidity | 0~95% RH | |
| Product Weight | 20g | |
| Product Dimensions | 81.5mm × 18mm × 13.6mm |