Vesda VSP-974 Rotary ValveThe VESDA E VEA series of aspirated detectors combine VESDA reliability and early warning smoke detection with pinpoint addressability and a variety of annunciation options. They use patented air sampling points and multi channel microbore air sampling with three alarm sensitivity settings for the sampling points. As a multi channel addressable system, the VEA detector is able to divide a protected space into sampling locations, enabling the