The Fireray 3000 is our solution to the most technical and challenging of installation environments. The system uses a paired set of transmitter/receiver heads to cover the protected area. The unit emits a narrow beam of infra-red (IR) light in order to monitor for smoke and is controlled using a compact low level controller. Both detector heads (transmitter and receiver) have integral thumbwheels for ease of alignment. This model has been designed so that it can be installed by a single engineer. It also incorporates a visible laser as an alignment aid, with alignment LEDs offering a visual feedback. The system is fully customisable, with both the alarm thresholds (sensitivity) and delay to Alarm/Fault being controlled from the low level controller. This controller incorporates a LCD display, which offers a full icon-based, easy-to-use interface unit.