Key Features: High Precision Detection: Utilize an advanced electrochemical sensor for swift and accurate ammonia gas measurement, providing trustworthy readings. Large LCD Display: Equipped with a large screen that clearly shows ammonia gas concentration levels, making it easy for quick monitoring. Audio and Visual Alarms: Features customizable high and low audio alerts complemented by a visual red light warning, enabling prompt notification of hazardous levels. Portable and User-Friendly: The handheld design ensures convenient portability and ease of use across various applications, including gas stations, hospitals, agroforestry, and environmental monitoring. Extended Battery Life: Powered by a 3.7V rechargeable lithium battery, offering over 50 hours of continuous operation on a single charge. Specifications: Model: AT8500 Material: ABS Detection Gas Type: Ammonia Measuring Range: 0~100ppm Resolution: 0.1ppm Accuracy: >50ppm: ±6% Temperature Range: -10°C~50°C Response Time: T90 ≤120 seconds Recovery Time: ≤120 seconds Sensor Principle: Electrochemical, 2-year lifespan Display: TN Segment type LCD Alarm Mode: Acoustic and light alarms Power Supply: 3.7V rechargeable lithium battery Operation Time: >50 hours of continuous operation Working Environment Condition: -10°C~50°C Item Size: 180 x 65 x 32mm / 7.08 x 2.55 x 1.25in Item Weight: 149g / 5.25oz Package Weight: 359g / 12.66oz Package Size: 24.5 x 9.5 x 6cm / 9.64 x 3.74 x 2.36in Package Includes: 1 x Ammonia Gas Detector 1 x USB Charging Cable 1 x Storage Bag 1 x Battery 1 x User Manual (English)