DP Measuring Range -1000~1000Pa DP Accuracy ±1.5%FS±3Pa DP Resolution 1Pa Sampling Interval 1s Working Temperature -30℃~70℃ Storage Temperature -50℃~90℃ ESD Protection ±25KV Auto Power Save 5 mins Battery AAA battery × 2 Battery Lifetime ≥500 hours(Without alarm) IP Class IP50 Dimensions 140×58×20mm Housing ABS+PC,flame-retardant,toxicity and halogen free Display Area 47×16mm Weight 101g business#zoglab.cn (please change # to @)