Vesda VSP-974 Rotary Valve SF 29/12 and are direct replacements for

and are direct replacements for the FST-851 Series

Thermistor Modulating

Both models provide seven visual indicators for

or 95 to 177 candela output (see ordering information)

It is capable of replacing two individual relay control modules and two Class B monitor modules

Vesda VSP-974 Rotary Valve SF 29/12 and are direct replacements forThe 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