The Dorr Camera Wireless Remote Control 12C Olympus or cameras is great for long exposures as they require a vibration-free release. Any pressure on the cameras trigger can cause camera shake, so a quick solution to this is a remote release which is easy to use and very relaible. The Dorr Camera Wireless Remote Control 12C Olympus
has wireless transmission by radio in 16 channels to avoid interference by outside anomalies and it has a range of upto 15m.