CAATM JY-CA339 Home Security Alarm System delivers precise methane/propane detection with digital display for real-time monitoring. High-sensitivity semiconductor sensor ensures rapid response to gas leaks, featuring audible/visual alarms (85dB buzzer + LED flashes). Durable ABS housing with wall-mounted design resists corrosion and fits kitchens, garages, or basements. Automatic shut-off valve compatibility enhances safety. Calibration-free operation with 5-year lifespan. Complies with CE/RoHS standards. Ideal for residential, RV, or restaurant use. Bulk order discounts available.