It Beeps and Blinks ! The Quest Model Rocket Launch Controller features a blinking LED arming saftey light and an audible beeping alarm. For use with Quest Q2G2 igniters.Will also fire other brands of rocket igniters. Requires one 9v alkaline battery. Expect a fresh alkaline battery to give you about 30 launches when used with the Q2G2 igniter. Add the Quest-7814 X-ternal Battery Connector (EBC) for use when you you have a large group launch with more than 30 flights. (sold separately)