The EFDC control stations are suitable for the control of and signalling to equipment either on-board or by remote and are used in the chemical, petrochemical and pharmaceutical industries and in any place where an explosion-proof installation is required. This push button allows the installation up to four operators on the cover. EFDC series control and signalling units consist of a UNI 4514, UNI 3049, UNI 3051 or UNI 3599 copper-free aluminium alloy cylindrical enclosure with stainless steel bushes and pins for the buttons. Aluminium inside frame and neoprene seals resistant to temperatures between -30Â°C and +200Â°C. Standard Ral 7035 epoxy paint and min. quality 8.8 screws made of stainless steel.