DI-9104Exd is a light-sensitive detector that detects fire by picking up the ultraviolet light from flaming material. It’s designed for areas where an open fire is liable to occur with large amount of radiation and no smoldering stage, or where quick response to a fire is required. This detector can be applicable to zone 1 and 2 of explosive areas. The detector is able to work either in addressable mode connecting with GST intelligent fire alarm control panel to transmit signal through detection loop or in non-addressable mode connecting to 24VDC power supply to transmit signal by outputting different resistance values.