Explanation:
It's placed near the door. When a visitor presses the button, the bell rings inside alerting you that someone is at the door.
1. true
2.false
3.true
4. many - I'm not too certain of this answer
5. track changes
ιт ιѕ (α.) тяυє ιf уσυ fιи∂ иєω киσωℓєgє σи ∂σмєтнιиg ιт ¢αи ¢нαиgє ѕ¢ιєи¢є
ℓιкє нσω тнєу υѕє∂ тσ вєℓινє тнє єαятн ωαѕ fℓαт,σя нσω тнє єαятн ωαѕ тнє ¢єитєя σf тнє υиινєяѕє
нσρє ι ¢συℓ∂ нєℓρ уσυ!!!!!!!!
I believe they are icons.