I looked everywhere and cannot seem to be able to find any information. I have Olympus EPM2 micro 4/3 format. I use it semi-professionally for casual portraits and now I want to use it to take pictures of myself wearing jewellery pieces that I make. So I need the remote shutter control. There is one with a cord for this model but I don't think the cord will be long enough.
How do I know if my camera is capable of working with a cordless shutter control? How do I know if a camera is capable to do that in general? I looked at the bunch of wireless remote models and the since my camera is older, I don't see it listed anywhere.
And otherwise, what are my options for this kind of a project?
I'd look up the user manual you've bought it with or google up the manual for the sepcific model. You are about to find whether it can use wireless remote shutter and what models. New cameras with WiFi/bluetooth can be operated from your phone/tablet app as well.
Some shutter remotes use 2.5 mm jack, also known as 2.5 stereo jack providing 3 terminals - AF trigger, shutter trigger and common. You can use 2.5mm jack male-female cable to enhance the range or build your own.
There is also a possibility to get wireless reciever that is connected to the 2.5mm jack as well. It may have more than one output to allow for synchronised multiple units trigger, like cameras and flashes.