Specially effective for your Deaf or really hard of Listening to, especially in scenarios in which Visible alarms could possibly go unnoticed. Provision of telephones appropriate with Listening to aids, marked Together with the common ear and ‘T’ image and Geared up with inductive couplers and quantity controls. Design Equilibrium: https://www.firesense.co.uk/type/conventional-fire-system/conventional-sounders-vids-vads/