ASD535-1 is an high sensitivity active smoke detector with 1 pipe for aspirating smoke detection. It must be used with 1 optional smoke detector to choice between SSD535-1, SSD535-2 or SSD535-3. It’s used whenever point-type detection is not possible due to adverse environment (temperature, dust) or due to malfunctioning (maintenance difficulties, false ceiling...).
ASD535-2 is an high sensitivity active smoke detector with 2 pipes for aspirating smoke detection. It must be used with 2 optional smoke detectors to choice between SSD535-1, SSD535-2 or SSD535-3. It’s used whenever point-type detection is not possible due to adverse environment (temperature, dust) or due to malfunctioning (maintenance difficulties, false ceiling...).