“Mobiles” and watches and even that thingie on your water tank are all timers. Detonator is on the explosives. Your abbreviated “remote detonator” is a remote, radio controller. F**k it up, and some college kid will set the bomb off while you’re about, doing his show in frat’s dorm. Or that brat with an RC car.
Guess the ability to be cool lays in the fact that you can blast a metal door over a GSM network in a terrorist-polluted world.