Product Features Detects methane (natural gas), petroleum liquid, and carbon monoxide. Monitors for leaks or excessive levels in your environment. Alarm alerts for leaks: voice alarms and mobile app notifications (WIFI version). The WIFI version allows remote monitoring by connecting to the network for intelligent monitoring. Includes a simple and intuitive interface with a 1.4-inch TFT full-color LCD display. Aesthetically pleasing design with a comfortable three-dimensional square body. Ideal for use in kitchens, bathrooms, gas rooms, gas pipelines, and various indoor or outdoor environments. Specifications Version Ordinary Version / WIFI Version (Optional) Working Current Ordinary version: 170mAWIFI version: 210mA Alarm Mode Ordinary version: Sound (Buzzer)WIFI version: Sound (buzzer) and mobile push Material ABS Display 1.4" TFT LCD Power Supply USB type-C 5V/1A Methane (natural gas) Range 0-100%LEL Carbon Monoxide Range 0-1000PPM Working Environment -9~55℃,