Item specifics Brand Name:SMART SENSOR Model Number:AR8500DIY Supplies:Electrical With LCD Screen Or Not:Yes Gas Type:Ammonia ( NH3 ) GAS Detection of gas::Ammonia ( NH3 ) GAS DETECTOR Measuring range:: 0~100PPM Resolution: :0.1PPMBasic error: :0.5PPM Response time:: Less than 120 seconds Recovery time: :Less than 120 seconds Repeatability: :Less than +- 1% The principle of sensor: :Electrochemical principle, life for two yearsGas detector:gas monitorNH3 detector:Ammonia Gas Detector Brand SMART SENSOR Color Black + Grey Display Larger LCD display Gas Type Ammonia ( NH3 ) gas detectir Measuring range 0~100PPM Resolution 0.1PPM Basic error: 0.5PPM Response time: Less than 120 seconds Recovery time: Less than 120 seconds Repeatability: Less than 1% Measuring Principle Electrochemical principle, life for 2 years Low / High Alarm / Alarm Setting yes To alarm: Acoustic, optical double alarm, can set the alarm value, an alarm sound is divided into 80 dB Working Temperature: -20~ 50 Working Humidity : 95%RH (Non Gel) Storage Temperature : 0~40 Product Weight / Size: 170g / 181*63*30(mm) Power Supply 3.7V li-battery Continuous Operation Time 60 hours Packing Gift Box Application: Farms, animal farm ammonia detection; Ambient air monitoring and evaluation, Landfill ammonia detection; Frozen field ammonia concentration; Dangerous space into the detection; Shop and workshop etc and the surrounding places ammonia detection; After decorating the house ammonia detection; Storage tanks, pipelines, valves, leakage detection; Waste field survey; Packing Contents 1pc AR8500 Ammonia Gas 1pc User manual 1pc Carrying brouch 1pc 3.7V rechargable lithium battery 1pc Battery charger