About This ✅ Multi-Stage Gas Detection: Instantly identifies natural gas, propane & methane leaks with escalating alerts—Green (safe), Yellow (small leak), Orange (medium leak), and Red (significant leak)—paired with audible alarms. ✅ Critical Safety Features: Self-testing function (25-second startup), automatic shutdown, and sensor failure alert (red LED + continuous buzzer) ensure reliable operation when you need it most. ✅ Portable & Easy to Use: Lightweight wand design with simple one-button operation. Requires 2 AA batteries (included; ~16-hour lifespan) and includes protective sensor cap for storage. ✅ Essential Home/RV Protection: Safeguard your family from invisible threats. WARNING: Never use to confirm gas smells—evacuate immediately and call professionals. ✅ Annual Maintenance Reminder: For optimal performance, replace the sensor cartridge every year. Operating Temp: 15°F to 110°F (-9°C to 43°C). Avoid high humidity (>95%) or submersion. Overview Brand : Vanlison Style : Modern Power Source : Battery Powered Color : White Product Dimensions : 1.3"D x 1.3"W x 8.9"H Alarm : Audible, Visual Material : ABS Manufacturer : Vanlison