DIY SCIENCE KIT : MORSE CODER #WWM003 Build your very own Spy Tool - a Morse Coder with our kit. Contains all the parts required to build the Morse Coder as shown. Requires 2 AA Size Batteries to operate. Tools Required : You will need to purchase either white glue, UHU glue or hot glue gun(best) Wire Cutter Wire stripper (optional) 2 AA Size Batteries Note : Remove all batteries from battery holder when not in use. Caution : Batteries may be hot from usage.