Datasheet for the Siemens VLF-250 and VLF-500 for VESDA Series, published in 2015. Document No: 1178, Rev: 0. Models VLF-250 and VLF-500. Product features, environmental operating limits, and compatibility data.
Siemens VLF-250 and VLF-500 for VESDA Series Datasheet (2015) | FACP Manuals
