Intersafe data interface panels provide external programming access to installed systems without concern for the NFPA 70E directive requiring anyone opening an enclosure containing devices rated at more than 50 V to be protected from arc flash. There is no need for protective clothing or special equipment while within the enclosure. There are 24 standard configurations to support common programming protocols, and non-standard configurations are also available. Intersafe safely and easily provides external programming access for installed systems and can be used for applications such as shop-floor modification with common tools. The units can be put on new or existing enclosures.