Scope of application: It is used for the places in where there is explosive gas mixture of IIA, IIB and IIC grade and temperature class T1-T4 are classified into zone 1 and zone 2 such as workshop, warehouse , oiling station etc. for keeping temperature and warming. Product features: 1) The product is equipped with caster wheel for easy movement 2)Adopting flame-proof structure for safe and reliable use 3)It has two levels of warming power for voluntary selection 4)It is equipped with automatic temperature control for controlling and maintaining room temperature , combing temperature protector and thermo-fuse to provide three layer protection Model: BDKN-2BDKN-4BDKN-7.2Rated power(kw) 247.2Rated voltage(v) 220 380Rated frequency(Hz) 50Rated current(A) 9611Outline dimension (W*D*H) mm 442*458*434464*484*434586*720*890