The JJC S series Remote Switch is a compact wired remote switch with a cable which replicates all functions of the camera’s shutter release button. Handy for taking pictures of subjects that are difficult to approach, or to minimize vibration for close-ups and time exposure. 
How to use
Press the button half-way in to autofocus
Depress the button fully to trigger the shutter
Press the button and slide it forward to lock for long exposures

Product Highlights
Control Autofocus and Shutter Triggering
Capture Images without Camera Shake
Ideal for Taking Long Exposures
Use for Continuous or Single Exposures
No Battery Required-Powered by Camera