The Wizard 50G3 High Powered One Shot Firing Trigger uses a capacitor discharge—the most reliable firing system available—and can fire over 50 electric blasts on a half mile of military communications wire. It's powered by a a single 3-volt battery (CR123A). When triggered the capacitor delivers 300VDC at 10 joules.
It's about the size of a deck of cards and has a built in Demolition Safety Light (DSL) to assure a continuous circuit.
It also features a built-in galvanometer for verifying circuit continuity. The Wizard 50G3 is the smallest, most powerful and feature-filled blasting machine in its price range.
4.5 x 1.5 x 3.5 (LWH in inches)