Estes 2220 Electron Beam Launch Controller – Model Rocket Controller for Mini, A-C & D Engines with Safety Key and 17 ft Cable 3 inches in length with

3 inches in length with 8 Picatinny rail slots

Solid steel frame with black gloss finish is at home in harsh work environments or your kitchen counter

The exclusive tapered

•USB host and device connectivity

USB Plug-and-Play - Works with any USB port including those found on PCs

Estes 2220 Electron Beam Launch Controller – Model Rocket Controller for Mini, A-C & D Engines with Safety Key and 17 ft Cable 3 inches in length withEstes Electronic Beam Launch Controller for launching all mini, standard (A C) and D powered rockets Ignite your Estes model rockets and watch them soar (rockets sold separately) This package contains one controller, one safety key, one 17 foot launch cable, and instructions Requires four new AA alkaline batteries (not included)