Door signals The simplest of these doorbell signallers involves a push-button being connected to an electrical device that then transmits a signal to activate a vibrator worn by the deafblind person.
(a vibrator; worn; by the deafblind person) (a push-button; being connected; ) (an electrical device; transmits; a signal to activate a vibrator; T:then)
a vibrator a push-button an electrical device
worn being connected transmits
by the deafblind person
a signal to activate a vibrator T:then