eForCity Remote Switch FOR CANON XT XTi XSi 400D 450D RS-60E3 For long exposures (camera should be in Bulb Mode), press the button down completely and slide in the direction of the arrow / hold, which locks the pressed button, slide the button back to its original position when finished. Release button of this remote switch can be pressed half way and completely. Press the button half way to activate the autofocus and set the shutter speed. Press the button completely to shoot. It adds greater convenience and ease in many shooting situations. Easily plug this remote switch into your camera and turn your camera on. Best aftermarket replacement for Canon RS-80N3 Remote control. This remote cord allows the camera shutter to be released from a distance and prevents the camera from shaking. Type: Aftermarket. Color: Black. Length: 3 FT. Accessory ONLY, camera not included.