Snap Circuits Motion Electronics Exploration Kit | Over 165 Exciting STEM Projects | 4-Color Project Manual | 50+ Snap Modules | Unlimited FunSnap Circuits does it again! The Motion kit is focused on physics and things that "move" like pulleys, fans and motion detectors. Like the other sets, Snap Circuits gives your child a hands-on education in how electrical circuits work to run the everyday devices that they're familiar with.Snap Circuits Battery EliminatorStop buying batteries for your Snap Circuits kits. With this battery eliminator you won't ever have to buy batteries again. This ACSNAP adapter works with all versions of Snap Circuits. Elenco Snap Circuits Battery Eliminator works with all Snap Circuit kits and components. Use in conjunction with your Snap Circuit projects and replace batteries. Snap it on your Snap Circuit board wherever a battery unit is needed. Produces THREE different voltages: 3V, 5V, 6V volts. Use with the following Snap Circuit Kits: SC-100, SC-300, SC-500, SC-750, SCBE-75, SCP-01, SCP-02, SCP-03, SCP-04, SCP-06, SCP-08, SC-750R, SC-500R, SC-300R, SC-100R, SCM-450, SCM-400.