Night scenes or long exposure photography require that the camera be perfectly still while the exposure is made even when mounted on a tripod, pressing the shutter on the camera creates vibration, which is then detectable in your image as a lack of sharpness or blur. The use of a wireless remote control or a cable release will eliminate this undesirable camera shake. It also enables you to shoot without being in contact with the camera which is good for cameras mounted in difficult to access situations like mounted high above you. There are also third party solutions which also controls such as wireless infrared transmitter that operates the shutter of your camera

Infra-red wireless may also allow zooming and start-stop for Bulb exposures.