In accord with the present invention, a method is defined for an intelligent system to analyze potentially damaging information, and send special signals to users in real time, so as to alert potential victims and discourage predators. Electronic circuitry is also provided, that may be added to at least one of the hazard alarms, for transmitting and receiving digital information with other hazard alarms connected thereto. The LTCC impedance matching structure comprises a metallized layer overlying a major body portion of the impedance matching structure and comprises a passivation layer on the metallized layer.