- High-performance sensor, intelligent and accurate detection of gas leakage, and send out alarm signal timely - Operate stably and identify gas type effectively - Intelligent linkage to close pipeline valve and start exhausting fan - 1 valve output, 1 relay output - A built-in high-volume buzzer, 70dB (A) at 1m (3.28 feet) - Three indicator lights for displaying device status clearly - Gas Type: Methane (CH4), Natural gas - Power Supply: DC 12V 1A (power supply included)