BearHoHo Escape Room Props 3 IC Cards

3 IC card 1 to 1 to open the EM lock for escape room game.1 red line and 1 black one on controller conect to EM lock.When player put the IC to right place,the EM lock will be opened.How to reset for next player?User only need to take out one card and put it back is ok.Package including:1 controller,2 sets IC cards,1 US plug,user need to purchase the 12V EM lock,because it is not included.