Improvised Electronics Magic Cap Transmitters are the closest thing to a real detonator available on the market. They have a very low input resistance like a real cap. The input circuit will not allow the cap to be activated until the requirements for commit time are met. This allows the users to run small amounts of current through magic caps to create “trap detonators” often found in terrorist devices. The Magic Cap is also suitable for energetic RSP and is fast enough to report a detonation even when interrogated with an explosive tool in EOD operations.