access

alarm

cardiogram

cardiology

clinic

closeup

code

combination

control

crime

danger

device

digital

disarm

door

electrocardiograph

electronic

emergency

finger

hand

health

heart

heartbeat

home

hospital

house

input

key

keypad

machine

medical

modern

monitored

monitoring

office

panel

person

press

prevention

protection

ready

safety

screen

secure

security

sensor

symbol

system

touch

warning