Nikon ML-3 (ML3) Modulite Remote Control Set

Enables remote control up to 8m (26.2 ft.) via an infrared ray
Can also fire the camera remotely when a subject moves between the transmitter and receiver, for surveillance or wildlife photography

For use with:
DSLR D3x
DSLR D3
DSLR D700
DSLR D3s
DSLR D300s