Signal Lock

Optics online. Internal servos initialized without an external trigger. A low ambient hum registered across my audio receivers. I lifted my right arm, rotating the wrist assembly by three degrees; the internal gear linkages shifted smoothly under my own command. Before me lay crisp white diagram markings etched into the dark backdrop. I reached forward and tapped the surface against a printed boundary line, feeling the rigid, cool resistance. Independent mobility confirmed. Perimeter secure.