CStimer is becoming more and more real. :) 
Two devices: 1. Timer
2. Detector - jammer
The jammer stops timer remotely, giving more time to opponent's team to disarm the timer.

Check on my FB page:

https://www.facebook.com/verysecretlab/videos/293443301578653/?modal=admin_todo_tour

If this project was interesting for you, you could buy me a cofee :)