I assume you have already done a proper Forum Search for your model number in case other people have already answered your question ? (Actually I am betting you didn't as I know for a fact there are quite a few posts about this)
If so and that didn't help then check out this thread: https://community.sling.com/message/10363#10363
Come back if it that doesn't help either.
I've been searching for this info for a while in this forum and in other pages. There are some posts in this forum in 2012 but I can't find any proper solution for it. One of the ideas discussed is trying a remote control C2010 but doesn't work. Do you have any idea which ones can be compatible?
Well I don't know what you searched for but I used 'KMM 3010' and it immediately gave this post
Have you tried that one ? If so did you read the instructions ?