Explanation:

Railway Protection Force, Pune, under the Central Railways, has launched a Robotic ‘CAPTAIN ARJUN’ (Always be Responsible and Just Use to be Nice) to intensify the screening and surveillance. This Robot is launched to screen passengers while they board trains and keep a watch on anti-social elements. It can be deployed for multiple uses and it is an effective element in station access control and will augment the station security plan. It is equipped with a motion sensor, one PTZ camera and one Dome Camera. Hence option 4th is correct.