3d
activate
apartment
auditory
beep
bell
building
button
buzzer
chime
city
control
digit
door
dwelling
electric
emergency
engage
entryway
finger
give
home
house
icon
identity
isometric
melody
music
name
notice
notification
peal
press
protection
push
residence
ring
safeguard
safety
security
signal
sound
structure
touch
urban
urgency
wall