The Calumet Four-Channel Universal Radio DSLR Camera Trigger Kit means that you can trip your camera's shutter remotely, allowing you to keep your eye contact with the subject or enabling you to set up cameras in places you can't be. It is ideal for sports, nature & portrait photographers. This kit contains one transmitter & one receiver. It is capable of operating at a range of up to 150' (46m) in a non-obstructed area. The receiver comes with a standard 3.5mm jack, as well as a Velcro mount & a metal hook to mount to your camera strap. It requires two AA batteries (not included). The transmitter comes with an attached key chain & is powered by a 23A, 12-volt battery (included). Operating instructions are provided. Adapter plugs (sold spearately) are available for use with other camera models. Manual: Click here to read the manual for CF0060