Features:
High sensitivity and quick respond speed
Three LED lights shows different content or density of gas
Easily operate and use
Portable, durable and practical
Suitable for detecting natural gas, liquefied gas and so on

Specifications:
Color: Red + Black
Sensitivity: Maximum 500ppm (dimethylmethane); 100ppm (natural gas)
Working temperature: 20-55°C
Working humidity: less than 95%RH (relative)
Working current: 200mA
Voltage: DC 3V
Respond time: less than 5s
Sound frequency: More than 65dB