Check the listing for details. Quest Flying Model Rocket Accessories Launch Controller Phaser QST 7512. Condition: New. Listed at 25.49 USD. Quest Flying Model Rocket Accessories Launch Controller Phaser QST 7512 AeroTech/Quest introduces new Phaser™ Launch Controller (No. 7512) for the Quest Model Rocketry Starter Sets and Launch Sets. The Phaser features a futuristic handheld design for two-handed operation. Bright red LED arming light signals a ready-to-launch status and large red launch button makes rocket ignition a breeze. Safety key is spring-loaded when inserted and is permanently attached, via flexible cord, to the Phaser Controller to avoid loosing it in the grass. Includes 18 ft. of launch cable with flat-jawed micro-clips for secure attachment to the rocket motor’s initiator. Requires one 9 volt, snap-top, Lithium battery for operation - Not Included. Fresh 9 volt Lithium battery should deliver 75 to 100 or more launchings when used with FirstFire™ Micro or Mini Initiators. Requires 1 9V Lithium battery