... ,are widely used in industries. It has CE Bimetal thermometer Manometer is widely used in petroleum,petrochamical,power,pharmaceutical,chamical ... engineering industry.Compared to the glass thermometer,it is more convenient and inexpensive.And it can ... 20 to 60 deg CRelative humility lower than 85%Electric contact capacity 10VA (max electric current 1A,max voltage 22V)