The DI-9104Exd is an explosion-proof UV flame detector that features a single chip microcomputer for signal processing and communication control. It has an intelligent algorithm for fast alarm response and superior false alarm rejection. The detector connects directly to GST addressable loops and is compatible with all GST intelligent panels. It has three sensitivity levels and is high sensitive, reliable, and resistant to dust, corrosion, and humidity. The detector is adapted for use in explosive areas 1 and 2.