This is a spare/extra receiver for the Signolux Visual Alert System. The receiver has eight different indicators, so you can be alerted to important household sounds from your choice of Signolux transmitters (including the doorbell, phone, baby monitor and smoke alarm) available separately. The receiver will alert you by extra-loud chimes (up to 90dB), a bright flashing light and visual indication symbols. It’s suitable for people with up to severe hearing loss.
You need at least one transmitter for the Signolux Visual Signal System receiver to work.