Features: Experience precise ammonia detection with AR8500, wide measuring Ranges of 0-100PPM and double sound light alarms for enhances safety in various environment. This handheld ammonia gas Detectors boasts advanced electrochemical Sensors, providing quick responses times and high accuracy, all displayed on a large, easy to read LCD screen. Suitable for professional in industry such as agriculture and environmental monitoring, ensuring safe working conditions by detecting hazardous ammonia. Perfect for applications including gas stations, hospitals and workshops, this portable device is essential for monitoring ammonia concentrations and preventing potential health risks. Suitable for convenience and reliability, the AR8500 offer over 60 hours of continuous operation with its rechargeable battery, making for prolonged use in critical setting. Specifications: Component:ABS+Metal Measuring Ranges: 0~100PPM Resolution: 0.1PPM Basic error: 2% Temperature Ranges:-10℃ ~ 50℃ Responses time: T90≤120s Recovery time: ≤120s Principle of Sensors: electrochemical principle, with a life of two years. Alarm modes: sound/light double alarm. Power supply modes: 3.7V lbattery (rechargeable) Battery working time: >60h (continuous operation) Working environment temperature and humidity: -10℃~50℃ Size:Approx.181mm/7.13inch Package Includes: 1 Set Ammonia Gas Detectors note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.