This is the best, most reliable low-current igniter available today. Firing current is about 125 MilliAmps-about 1/10 the current required for Estes igniters. Can be fired easily with a 9 volt battery. A word of caution: Do not use these with any launch controller that has a light bulb for continuity!! Most light bulbs will draw enough current to fire the igniter. You need a launch controller that has a continuity LED. LEDs will only draw about 25 mA, giving you a wide safety margin. These are not only good for ejection charges, but it's the only igniter I use for clustering. Be sure to wire the igniters in PARALLEL for clusters. They ignite about 3 times faster than Estes igniters, which is both a pro and a con. On the pro side, they will fire before the rocket leaves the pad. The con is, these igniters not only fire fast, they burn fast, producing more of a pop than a sustained burn. On some aged Estes motors, I have had the igniter work but the motor fail to light. If your motors are not too fresh, it seems the propellant gets a thin oxide film on it that can make ignition more difficult. The next time I do a cluster, I'm not only going to test continuity beforehand, I'm going to use a small drill bit to abrade the propellant a bit and create a fresh ignition surface. Another trick that will help is dipping the igniter into one of the pyrogen compounds that are available.

Q2G2's for Cluster rockets are fool proof. I have launched 2,3,7 and 12 motor clusters using these igniters with no problems. This was done on a 12 volt power supply. All in all with over 250 flights in single and clustered motors not one has failed . It doesn't get any better than that.

I have yet to see a single failure in any of the 180 Q2G2's I've used now, either with low-power Estes and Quest motors, or in an altimeter+ejection-charge (black powder) configuration. For the latter, I test each with a multimeter before use, and they consistently land in the 1.1-1.3 Ohms range. I'd buy these by the hundred-pack if they were available!