This is John Connor's (Christian Bale) hero robotic eye device from the 2009 futuristic action sequel Terminator Salvation. Near the end of the film, Connor takes the optical device from a robotic motorcycle; he then builds this device to activate the red eye in order to enter, and activate the computers in, the Skynet headquarters.
This mechanism is made of an amalgam of electronic pieces—wires, circuit board, battery—connected to the optical device, which features a working blue light (the light was change to red in post-production). There is a switch on the bottom of the device which turns on the light.
Although some wires are now bent or cut, device can be easily screenmatched thanks to certain weathering on the eye area and the bends on the battery pack underneath.
COA: Prop Store of London