Fortress Interlocks has introduced its new Atex certified explosion proof safety gate switch manufactured from stainless steel and zinc alloys. Designed to control access to machinery and process lines operating in potentially explosive environments, it is also ingress protected to IP67. The switch is suitable for use in zone 1 and 2 environments such as those found in the chemical and petrochemical, paint, pharmaceutical, flour, powders and mining industries. The Stop TX is an explosion protection safety gate switch, available with either a handle actuator (AmStop TX) or tongue actuator (AtStop TX), for use on both hinged and sliding doors. Sealed to IP67 and IEC529 it is protected against corrosion, water, dust and oil. The Stop TX features a tamper-proof locking mechanism, dual channel safety circuitry and is suitable for high risk Category 4 applications as defined by European machinery safety regulations EN954-1.