英文關鍵字
cctv
camera
surveillance
led
security
rotate
cam
safety
night
light
infrared
turning
protection
spy
video
vision
technology
bright
turned
panning
ip
smart
robotic
record
close
watching
scanning
privacy
wall
room
shot
police
robbery
secrecy
automatic
wifi
horizontal
suspicious
equipment
criminal
system
offender
industry
overhead
cyberspace
crime
webcam