Untitled Document

This set of electronic boobytrap demonstration models has been made for educational purposes.

It consists of several trigger units, some come with external sensors and a universal switching unit.

Picture above: Universal trigger unit with external audio sensor and universal switching unit connected with battery and dummifuse

Type: AA	Unit is sensitive to:	Picture	Description
05	Vibration		This unit reacts on vibrations. The sensitivity is adjustable. It is activated by applying the connector into the plug. From then, for about 40 seconds, the yellow LED flashes. When the yellow LED fades out the unit is primed. If there is enough vibration applied on the brass coloured pad, the unit delivers the trigger impulse to the connected cable (3 seconds, 9V, max. 60mA) and the red LED is switched on. After that the red LED is switched off and the unit primes itselve again.
07	Changing illumination		This unit reacts on changing illumination. The sensitivity is adjustable. It is activated by applying the connector into the plug. From then, for about 40 seconds, the yellow LED flashes and the unit set itself on the actual light intensity. When the yellow LED fades out the unit is primed. If there is a sudden change of light intensity the unit delivers the trigger impulse to the connected cable (3 seconds, 9V, max. 60mA) and the red LED is switched on. After that the red LED is switched off and the unit primes itselve again. The unit is not sensitive to slow changes of light intensity.
09	Universal unit, ac signal source		This unit is equipped with an aditional connector for an external sensor. The sensitivity is adjustable. The unit is activated by applying the connector coming from the universal switching unit into the plug. From then, for about 40 seconds, the yellow LED starts to blink. When the blinking LED fades out the unit is primed. If the unit detects an ac signal the unit delivers the trigger impulse to the connected cable (3 seconds, 9V, max. 60mA) and the red LED is switched on. After that the red LED is switched off and the unit primes itselve again. Different external sensors can be used. (see below)
00	Universal switching unit		It is used to blow a conventional type "A" trainingsfuse (only dummies should be used, DO NOT USE A FUSE WITH EXPLOSIVES INSIDE!!!). It is used by connecting a battery (between 4,5V and 12V) to the red and black cable and by connecting the fuse to the universal-snap-connectors. The battery and the fuse can be tested by pressing the black button. If the green LED goes on, the fuse seem to be connected and the battery has enough capacity to blow the fuse. By applying the round conector into one of the trigger units the swiching unit is ready and waits for a trigger impulse.

	External sensor: Audio signals		This sensor (active microphone) reports audio activity to the trigger unit. Depending on the adjusted sensitivity it can trigger from "not loud spoken words" up to shouting and shooting noises.
	External sensor: Vibration		This sensor reports the changing of mechanical stress and vibrations to the trigger unit. The stress has to be appied on the brass colored field in the middle. With this external sensor the sensitivity can be very high. It can be further incresaed by placing more or less heavy objects on the brass field.
	External sensor: Magnetic fields		This sensor reports the changing of magnetic fields to the trigger unit. The magnetic sensitivity can be amplyfied by using a magnetic conductor like an iron rod or a ferrite rod. Without an magnetic amplifier the unit triggers for example on the magnetic emissions of metal detectors (single and doublepulse, continious mode,...), mag.-radiation of monitors, with an apropriate ferrite antenna it can detect electric tools (up to 1 meter and more) and current-pulses like produced while starting a car-engine. by placing a strong permanent magnet on top of the unit it is even sensitive to vibrations.

Additional equipement:

Audio signal unit		This signal unit can be used instead of the universal swiching unit for example to avoid smoke. By applying the round conector into one of the trigger units the audio-signal unit is ready and waits for a trigger impulse. When detecting the impulse the audio-signal unit emits a loud and agressive noise.
Swichbox		The swichbox can be used to combine up to five different trigger units with one or two signal units.