This can only be obtained after completeing the El Diablo DLC.
To make the special remote you must find all 10 Electric Devices on the 3 DLC Islands and and bring them to Henry to complete the quest and receive your special remote.
6 can be found on the islands (2 on each island)
3 from the hidden monkey quests which only show up after completing the DLC story.
1 from the monkey quest on Ascuas Island
The monkey quest on Ascuas Island requires a Gold Chalice from Santa Barbara Island.
Heres a guide for the 3 hidden monkey quests:
Island 1 (Horno)
Hidden Monkey Quest
Time he appears: 2am
Island 2 (Cenizas)
Hidden Monkey Quest
Time he appears: 11pm
Island 3 (Ascuas)
Hidden Monkey Quest
Time he appears: 4:30am
Credit to Best ln Philly for the hidden monkey guide and these 3 mission count towards the achievement for completing all the monkeys' quests of El Diablo islands.
A great guide for this achievement can be found here
Heres the 3 maps for the last 6 Electrical Devices that can be found on the islands:
Edit: If this doesnt work then i found the webpage for the 3 pictures under the achievement
http://www.xboxachievements.com/game/how-to-survive-storm-wa...Credit to ScutumMagister from x360a
Hopes this helps pm me or comment if you have any questions or anything to add to the solution. If you give me a negative vote please comment or pm why so i can fix it.