ok guys, i checked...
the dome shape thing with red light is "motion sensor"
purpose is to detect movement in the room...
e.g like maybe 12am, not suppose to have people in the nursing room rite, then end up the sensor detect movement in the room (which is not allowed at 12am), then the sensor will send signal to the management and management will check...this is to reduce like people hanky panky in the room, or someone hiding there, sleeping etc..
it is not a camera..