2230 E rocket launch controller
Stand back, it's time to launch an “E” Engine Powered Model Rocket. The Estes 'E' Launch Controller comes completely wired. It also includes a safety key and 30 ' (9 m) of cable. The Estes E Launch Controller takes 4 AA alkaline batteries (not included). Adult supervision is recommended for anyone under 18, when launching “E” powered rockets. 4 AA alkaline batteries (not included).