Inert Mechanical Temperature Switch

The X-ray correct, inert, mechanical temperature switch firing circuit contains all of the necessary components of an improvised explosive device (IED). The circuit is fully functional and will demonstrate that the firing switch has been activated by illuminating the LED in the blasting cap. The circuit board contains an X-ray correct battery, wire, switch, detonator, and inert explosive.

Powered by three AAA batteries, this IED circuit would be activated when the mechanical thermometer arm makes contact with the circuit. The pipe bomb is a steel pipe with inert black powder. The X-ray correct black powder simulant is engineered to have the same density and effective atomic number (Zeff) as the real explosive threat.