The flash prices of VADs are between 0.five Hz and a pair of Hz. VADs could consist of a synchronisation purpose to reduce the potential of a flash frequency that would bring about adverse consequences, including inducing epileptic matches, when products are in close proximity. Dr Zzeus Q&A: If hearth https://www.firesense.co.uk/type/conventional-fire-system/conventional-sounders-vids-vads/