2019-01-09 11:34:16 UTC
The Dalek in this story was entirely radio-operated.
According to Darren Fereday, the concept artist, the Dalek in this episode was fully robotic and thus radio-operated, requiring no Dalek operator inside the casing. Three separate systems controlled the eyestalk, the gunstick and manipulator arm, and the lights. He also noted that the melted Dalek made use of practical LED lighting.
I wonder if the radio controlled Dalek model could be converted into an actual weapon. (Attach actual gun or laser to gunstalk, open fire. Also install computer to make it autonomous).