Explosion-proof operation column solid aluminum die-casting, surface electrostatic spray; Built Built universal switch, button, ammeter (according to customer requirements other tables installed), lights; terminals increased safety terminal, improved product safety; universal switch has 30 functions freely chosen by the user, can be customized according to customer requirements; proof in the form of adoption, reliable explosion-proof, dust-proof applies to the area. I. Scope 1. explosive gas atmospheres dangerous places: 1 and Zone 2; 2. Flammable gas, steam class: ⅡA, ⅡB, ⅡC; 3. Temperature classes: T1 ~ T5; 4. Indoor and outdoor ( IP54, according to user requirements to reach IP65). 5, widely used in oil exploration, refining, chemical, pharmaceutical, military, and other hazardous environments and offshore oil platform, oil tankers and other places. Second, the technical parameters: 1, the proof mark: ExdIIBT6, DIPA21TA, T6 2, Rated voltage: 220V / 380V 3, Rated current: 10A 4, protection class: IP55 5, Inlet thread: G3 / 4 6, cable diameter : Suitable diameter 10mm ~ 14mm 7, using the category: AC-1, AC-3 Ordering Information 1, in the selection according to the total units and sub-units of meaning, marked buttons, meters, illuminated buttons, lights, switches their quantity, specifications and installation products, etc., detailing the model of the desired product; 2, total unit indicate the desired button, meter, illuminated buttons, lights, switches quantity, product installation, the line mode; 3, sub-units specify in detail button, meter, illuminated buttons, lights, switches, each of the parameters, such as the number, size, voltage, etc.; 4, if no special wiring requirements, press the red button to point leads NC , green or yellow button normally open leads, if different wiring requirements, please provide the schematic