A:Say all The electric outlet type the hot electric resistance is suitable for to measure-200 ℃~s is 650 ℃ liquid,air inside the scope and solid surface temperature.The product's adoption connects the plug-in form, installing convenience. Two:Product parameter 1:Main technique parameter accuracy grade:A,B 2:Protection grade:IP65 3:Separate to explode grade:The BT4 of d ‖ .The CT5 of d ‖ 4:The model number and specification