Description: PROFESSIONAL TOOL: The gas detector is a device that detects the presence of CO gases in an area, often as part of a safety system. EASY TO USE: CO meter detects and measures concentration levels of carbon monoxide gas. HANDHELD SIZE: The CO gas meter is compact and lightweight, professional designed to fit comfortable in your hand, easy to carry and operate. POWERFUL FUNCTION: With a wide measuring range 0-1000PPM, LCD digital display, high accuracy sensor. APPLICATION: Carbon monoxide meter is widely used in petroleum, chemical, coal, metallurgy, paper, fire, municipal, telecommunications, food, textile and other industries. Specification: Material: ABS Color: Black+Yellow Size(LxWxH): About 135x47x25mm/5.3x1.9x1in Measuring range: 0-1000PPM Working Temperature: 0-50°C/ 32-122°F Resolution:1PPM Powered by: 3pcs x 1.5V AAA batteries (Not included) Reaction time: <60 seconds Automatic shutdown: Automatic shutdown after 10 minutes Alarm: More than 200ppm Data hold function: Yes Package includes: 1pc x Carbon Monoxide Detector 1pc x English User Manual Note: 1. Due to the light and screen difference, the items color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.