... measurement value is from 0 to 90% ) Refresh rate displayed: about 0.5 second Display format: LCD, 4 digits Alarm: buzzer ... Dry battery: 4 batteries of 1.5V Battery life: about 15 hours Power off automatically: 15 min The range of ... 261cm(length)* 73cm(width)*38cm(height) Weight( include the batteries): about 220g Accessories: instruction manual, batteries, carrying case Electrical specification The ...